Mac OS X uses user ID numbers -- not alphanumeric usernames -- to define user permissions. As such, it is a bad idea (from a security standpoint) to assign the same user ID to two different users, ...

Nintendo's online account system — along with its Nintendo Switch account ID setup — is poised to be a more meaningful and useful way to tie your accounts and your purchases online together. The new ...

Kaspersky antivirus solutions injected in the web pages visited by its users an identification number unique for each system. This started in late 2015 and could be used to track a user's browsing ...