A new system aims to replace passwords with one that questions your online activity to make sure it is really you.
ActivPass will trawl through your social media, text and call histories, music playlists and everything you do.
To log in, it might ask you which cat photo did you favourite on twitter this morning, who did you phone drunkenly last night, or what did you say in the last text you sent.
It will apparently help those who cannot remember different passwords, and it works 95% of the time.