How can I remove someone from my Galaxy tablet that uses the Android apps?

[AC Question]

They have added Swiftkey? Also. Will resetting my tablet to beginning changing username keep them out? And me? They know my name and all my usernames I've used to change.

 

[B. Diddy]

Welcome to Android Central! Do you mean that there are multiple user profiles on the tablet? Or is someone using your tablet and installing apps on your account?