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Website evidence · pilot dataset

Does ebay.com fingerprint you?

Fingerprinting indicators observed.

The latest measured scans include canvas drawing and readback by the same script. This is a fingerprinting indicator, not proof of tracking intent or transmission.

Open evidence JSON ↗

All 11 source records are included in the JSON. 2 older runs have no recorded timestamp; missing provenance stays unknown. The tabs show the latest usable homepage measurement for each setup. Later failed attempts remain in the history. Scan scope and methodology ↗

Inside the scan

← All websites

Visitor setup

Draw + readback

5 of 5 signal families observed

Canvas: ObservedWebGL: ObservedAudio: ObservedFonts: ObservedDevice: Observed
Measurement
Measured · Partial load
Page context
Page document
Scan time
2026-10-22T20:09:11.461483Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleError Page | eBay

CanvasDraws text and reads canvas output.4 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext4 calls

Frame: https://www.ebay.com/

  • Inline caller recorded
  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
canvas.toDataURL1 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
canvas2d.fillText2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
canvas2d.measureText11 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
WebGLQueries the graphics environment.4 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

webgl2renderingcontext.getExtension4 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
webgl2renderingcontext.getParameter22 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
webglrenderingcontext.getExtension1 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
webglrenderingcontext.getParameter2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
AudioRenders or reads audio samples.7 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

analyser.getFloatFrequencyData1 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
analyser.getFloatTimeDomainData1 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
audio.createAnalyser2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
audio.createDynamicsCompressor1 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
audio.createOscillator2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
audiobuffer.getChannelData1 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
offlineaudio.startRendering1 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
FontsMeasures text repeatedly.1 API entries

Observed requires at least ten text-measurement calls. Guide ↗

canvas2d.measureText11 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
DeviceReads browser and display properties.14 API entries

Observed requires at least three distinct browser, screen, or window properties. Guide ↗

navigator.deviceMemory2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
navigator.hardwareConcurrency2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
navigator.language1 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
navigator.languages2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
navigator.maxTouchPoints2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
navigator.platform4 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
navigator.plugins17 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
navigator.userAgent5 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
navigator.webdriver3 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
screen.colorDepth2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
screen.height2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
screen.pixelDepth2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
screen.width2 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
window.devicePixelRatio3 calls

Frame: https://www.ebay.com/

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
Scripts with both text drawing and canvas readback 1

These source URLs appear in both call groups. Aggregated logs do not preserve the full execution sequence or establish the purpose of the collection.

  • https://www.ebay.com/i8MODk/n/O/96FxrNlV5Q/JLS16hi1/DlInKQE/fjJWbUMA/PVQV
Providers, script signatures, and DNS 0 provider labels

Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

No provider or DNS evidence in this record.

Network and worker observations 6 requests
Captured scripts
1
Instrumented frames
1
Google Ads observed
No
Transmission evidence
Not validated

Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

Third-party hosts

  • secureir.ebaystatic.com
Other recorded API calls 2
  • document.cookie.read16 calls
  • document.cookie.write2 calls
Source record and integrity
Original source
results/headful/ebay-com-20261022T200911.json
Original file SHA-256
ba5b02f4efd3c9c4f6f92fc1eb630141f6d4f90fb281b61357ef7af826050e0f

Run ID: headful-ba5b02f4efd3. The JSON contains sanitized observations, not the original private scan payload.

Other scan attempts (4)

Visitor setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
Not recorded
Browser / scanner
Unknown browser / Unversioned
Navigation failed — no usable scan result

Navigation or page loading failed in this browser setup. The record does not establish why it failed.

Source record and integrity
Original source
results/headful/ebay-com.json
Original file SHA-256
4a7f65eb6493ace78d351ddffff7c1e8587c3f0eb6e26c956986ddbb97ce32b9

Run ID: headful-4a7f65eb6493. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-19T05:46:48.231688Z
Browser / scanner
156.0.8078.4 / 0.3
Navigation failed — no usable scan result

Navigation or page loading failed in this browser setup. The record does not establish why it failed.

Source record and integrity
Original source
results/headful/ebay-com-20261019T054648.json
Original file SHA-256
8e745e7c59a81a1bda9a1ea9c0ca4b015842c372ac3f3c9b12dd28926cb90df5

Run ID: headful-8e745e7c59a8. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-22T14:42:51.968791Z
Browser / scanner
156.0.8078.4 / 0.4
Navigation failed — no usable scan result

Navigation or page loading failed in this browser setup. The record does not establish why it failed.

Source record and integrity
Original source
results/headful/ebay-com-20261022T144251.json
Original file SHA-256
088af0b28f2056a79d964722efae0f70cad65a73f49c113f7b6b22093ce41465

Run ID: headful-088af0b28f20. The JSON contains sanitized observations, not the original private scan payload.

Visitor setup

Scanner error

Scanner error

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Scanner error
Page context
Page not measured
Scan time
2026-10-22T20:09:10.753830Z
Browser / scanner
156.0.8078.4 / 0.4
Scanner error — no usable scan result

The scanner crashed while collecting this page. No usable API results were saved for this setup. A fresh scan is needed; this is not a site-blocking verdict.

Source record and integrity
Original source
results/headful/ebay-com-20261022T200910.json
Original file SHA-256
c3eaf3c5259ead530cbccf9c620b65b9350eaa2624cfd8590039208582c8a758

Run ID: headful-c3eaf3c5259e. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured
Page context
Page document
Scan time
2026-10-22T23:48:37.527678Z
Browser / scanner
156.0.8078.4 / 0.4

Captured titleError Page | eBay

CanvasDraws text and reads canvas output.1 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls

Frame: https://www.ebay.com/

  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.0 API entries

Observed requires at least three distinct browser, screen, or window properties. Guide ↗

No matching API call was captured.

Providers, script signatures, and DNS 0 provider labels

Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

No provider or DNS evidence in this record.

Network and worker observations 3 requests
Captured scripts
0
Instrumented frames
1
Google Ads observed
No
Transmission evidence
Not validated

Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

Third-party hosts

  • secureir.ebaystatic.com
Source record and integrity
Original source
results/headless/ebay-com-20261022T234837.json
Original file SHA-256
8227edac8deae3ca24c1f416a7f35348c41b2d9884e60d1830a6f7d53069fd5a

Run ID: research-8227edac8dea. The JSON contains sanitized observations, not the original private scan payload.

Other scan attempts (5)

Research setup

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured
Page context
Page document
Scan time
Not recorded
Browser / scanner
Unknown browser / Unversioned

Captured titleError Page | eBay

CanvasDraws text and reads canvas output.1 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls
  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.0 API entries

Observed requires at least three distinct browser, screen, or window properties. Guide ↗

No matching API call was captured.

Providers, script signatures, and DNS 0 provider labels

Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

No provider or DNS evidence in this record.

Network and worker observations 3 requests
Captured scripts
0
Instrumented frames
Not recorded
Google Ads observed
No
Transmission evidence
Not validated

Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

Third-party hosts

  • secureir.ebaystatic.com
Source record and integrity
Original source
results/headless/ebay-com.json
Original file SHA-256
eb3e6241e13c585e58250f63a586d1ac3bbf8a476efa6beb551ab87bd99a3643

The research mode is inferred from the archive folder because this legacy record has no mode field.

Run ID: research-eb3e6241e13c. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Not observed

0 of 5 signal families observed

Canvas: Not observedWebGL: Not observedAudio: Not observedFonts: Not observedDevice: Not observed
Measurement
Measured
Page context
Page document
Scan time
2026-10-19T05:45:23.290917Z
Browser / scanner
156.0.8078.4 / 0.3

Captured titleError Page | eBay

CanvasDraws text and reads canvas output.1 API entries

Observed requires a text-drawing API and a canvas readback API. Guide ↗

canvas.getContext1 calls

Frame: https://www.ebay.com/

  • Inline caller recorded
WebGLQueries the graphics environment.0 API entries

Observed requires at least three distinct WebGL probing APIs. Guide ↗

No matching API call was captured.

AudioRenders or reads audio samples.0 API entries

Observed requires offline rendering, buffer reads, or analyser reads. Guide ↗

No matching API call was captured.

FontsMeasures text repeatedly.0 API entries

Observed requires at least ten text-measurement calls. Guide ↗

No matching API call was captured.

DeviceReads browser and display properties.0 API entries

Observed requires at least three distinct browser, screen, or window properties. Guide ↗

No matching API call was captured.

Providers, script signatures, and DNS 0 provider labels

Provider labels and static signatures are scanner observations. A library-name match does not establish that its code executed.

No provider or DNS evidence in this record.

Network and worker observations 3 requests
Captured scripts
0
Instrumented frames
1
Google Ads observed
No
Transmission evidence
Not validated

Legacy transmission hints are excluded. A request after an API call does not establish that the extracted value was sent.

Third-party hosts

  • secureir.ebaystatic.com
Source record and integrity
Original source
results/headless/ebay-com-20261019T054523.json
Original file SHA-256
57ca1e575785700d3cf5fc3fdeb1a309d109edb85f22f93c2d92e0f60517a313

Run ID: research-57ca1e575785. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-22T18:03:27.637233Z
Browser / scanner
156.0.8078.4 / 0.4
Navigation failed — no usable scan result

Navigation or page loading failed in this browser setup. The record does not establish why it failed.

Source record and integrity
Original source
results/headless/ebay-com-20261022T180327.json
Original file SHA-256
3ab36c6e21f1dc468967902535a531bbbd1c36037ee55d37d4ced897b065db7b

Run ID: research-3ab36c6e21f1. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Scanner error

Scanner error

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Scanner error
Page context
Page not measured
Scan time
2026-10-22T22:24:43.984689Z
Browser / scanner
156.0.8078.4 / 0.4
Scanner error — no usable scan result

The scanner crashed while collecting this page. No usable API results were saved for this setup. A fresh scan is needed; this is not a site-blocking verdict.

Source record and integrity
Original source
results/headless/ebay-com-20261022T222443.json
Original file SHA-256
ad65a2992889da513f4c0ac9582a24f94146e1ad2a82b73186f7fa22dd5c139b

Run ID: research-ad65a2992889. The JSON contains sanitized observations, not the original private scan payload.

Research setup

Navigation failed

Navigation failed

Canvas: UnmeasuredWebGL: UnmeasuredAudio: UnmeasuredFonts: UnmeasuredDevice: Unmeasured
Measurement
Navigation failed
Page context
Page not measured
Scan time
2026-10-22T22:24:44.096691Z
Browser / scanner
156.0.8078.4 / 0.4
Navigation failed — no usable scan result

Navigation or page loading failed in this browser setup. The record does not establish why it failed.

Source record and integrity
Original source
results/headless/ebay-com-20261022T222444.json
Original file SHA-256
8bb81ed4a4c8f917b8f4dab711c147bba5a5bd922a4634cd1c3faffbcb797d9e

Run ID: research-8bb81ed4a4c8. The JSON contains sanitized observations, not the original private scan payload.

Queries, request bodies, cookies, extracted values, raw errors, and session payloads are excluded before publication. The source digest identifies the original private record.

Read the sanitized JSON →