It seems like this has happen to everyone that travels often, all of a sudden you reach to your pocket or you carry on and all you find is an empty space, that is a bad feeling. After this you find yourself without your camera, cellphone, laptop, etc. while on vacation, and the reason why you put them in there in the first place is because you need them right?
Luckily some services exist that can help you track down that equipment and in some cases protect your identity from theft, these are some samples:
GadgetTrak Mobile Security it will locate your phone using GPS and Wi-Fi and can also lock the device or erase your personal information —even if someone inserts another SIM card.
CameraTrace their system tracks a registered camera using metadata embedded in digital photos, so it can find any pictures taken with your camera that have been uploaded to one of many popular image-sharing sites and social networks
LoJack for Laptops if reported stolen, the program’s forensic tools automatically contact LoJack for Laptops’s central command every 15 minutes, making it easy to locate and collects evidence that police can use in case is necessary.