This year's CES was filled with new wearable technologies looking for the next big thing, but Thinkgeek is selling a tongue-in-cheek wearable as a spidey-sense shirt that vibrates when someone approaches from behind, signaling the wearer a person is within 5 feet.

The device is a novelty, announced just before last year's Comic-Con, but would make great sense as a real wearable or a feature included in a line of self-protection wearables. So much discussion on the benefit of wearables has focused inwards so far. Step tracking or distance measuring was the first real attempt. Tracking body data such as heart rate, blood pressure, blood sugar and such for biorhythm projection is where the current cycle is focused. How long before we focus outward?

Individuals are attacked regularly all around the world, often from behind so the victim is less able to prepare to protect themselves. Add to this a wearable capable of not only signaling the owner of another person approaching from behind, but it could also identify the angle and perhaps where the person approaching is focusing their eyes with the ability to track where the potential attacker is looking: is it a skateboarder or biker watching ahead or a thief focused on the victim's purse? A device could also include a camera capable of snapping multiple shots of the person approaching, capable of uploading photos or videos to a server and even notifying the police if the victim is jarred or falls over.

Would having a device capable of warning you of a possible assault and/or photographing the attacker make you feel more comfortable? Would you wear it regularly? Would having these devices widespread among the populace help reduce these types of assaults? Drop your thoughts in