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Daily Problem·Thursday, 19 January 2023Back to today

Tracking technologies

GCSE · Computer Science · OCR · 1.6.4 — Privacy issues: data sharing, tracking, profiling and informed consent

Question

Question (4 marks): Describe two different technologies a website can use to track users, and explain how each works.

Mark scheme (4 marks — 2 × 2): For each technology: 1 mark for naming, 1 mark for correct explanation. Examples:

  • Cookies (1) — small text files stored in the browser that hold an identifier sent back to the server on each request, allowing the site to recognise the user (1).
  • Tracking pixel (1) — a 1×1 transparent image embedded in a page or email that, when loaded, sends a request to a tracking server logging IP, time and User-Agent (1).
  • Device fingerprinting (1) — combines browser/device characteristics (fonts, screen resolution, GPU) into a hash that uniquely identifies the device even without cookies (1).
  • GPS / location tracking (1) — mobile apps read OS-level location APIs to log latitude/longitude over time (1). Max 4 marks.

4 marks · take your time before peeking.

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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.