A recent Sony patent application identifies a problem many console gamers may be able to identify with when moving between consoles: "To log in to their account a user is often required to enter a password, which may be seen by other users.

Moreover, once a user has entered their password, a situation arises where the user remains logged into their account unless the user subsequently performs a log out operation, which can result in other user's potentially obtaining access to the user's profile."

Luckily, Sony's patent application for an "apparatus, system, and method of authentication" also offers a solution: a new method for "determining an identity of a user holding a handheld controller" by detecting and analyzing that user's unique "manipulations of the controller."

Sony could detect PlayStation users based on how they hold a controller