Information about the specific fonts installed on your device, common fonts, and not 

installing certain fonts, form a combination of fonts for a device, and finally generate 

a font fingerprint.Font fingerprints are primarily implemented through the browser's JavaScriptAPI. 

The main principle of this technique is that the browser can obtain and report a list of 

fonts available on the user's device. These font lists, combined with information from 

other browsers and devices, form a unique browser fingerprint. SupLogin allows users to select system default, custom, or random when they createa new browser, which generates different 

combinations of fonts with different font fingerprints.