Device signals your browser reveals
Device type, memory, CPU core count, battery status and touch support hint at the physical hardware behind your browser. Firefox and Safari deliberately withhold device memory and battery status to block a known tracking vector, so a blank card here is a privacy feature, not a fault.
Device
Hardware hints your browser exposes to any page you open.Frequently asked questions
What device signals does ReadMyBrowser check?
ReadMyBrowser checks 5 device signals: Device type, Device memory, CPU cores, Battery, Touch support. Each has its own explainer page with more detail.
Do any of these need my permission?
None of them do. Every device signal here is read automatically as soon as the page loads, with no prompt.