For people looking to protect their belongings from theft in public places, there are bag alarms out there that can alert them (and everyone around them) if someone tries to pick up their stuff. DIY hacker Kip Kedersha (kipkay on YouTube) recently came up with a clever way to make one of these alarms for just $2.
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The Lens Lock is the latest product in the GearGuard gear locking system by Gary Fong (maker of the well known LightSphere). It attaches to the back of a lens like an ordinary rear lens cap, but can be secured and locked using a cable/lock combo. This allows you to lock the gear down when not in use (like you would do with a bike) or lock it together with other gear in your bag, preventing individual items from being stolen from your bag.
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