As we cruise the Web everyday, most of us encounter a reCaptcha — those distorted letters and numbers designed to check that a human is behind an online activity like logging into an account or comment system. Lately, users have been seeing a change in the fuzzy text and have seen seeing what looks like real pictures.

Remember Samsung's rad Android 4.0 ICS feature that let users unlock their smartphones with their face? Yeah, it can easily be fooled by photos. To secure it better, Samsung's gone and added "blink detection" to the software to make it harder to spoof.

In TV shows, detectives search a database of faces at lightning speed to make a match to a photo or video footage — something that a new high performance camera and software system has made reality. It can capture a face and then search up to 36 million faces in one second to find a match in selected databases.

We've all seen videos where security personnel use an inappropriate tool to stop a perpetrator, and often it's simply because they don't have something more suitable with them. This arm-worn weapon is designed to avoid that, by giving them a choice between four different non-lethal weapons.