Google Nexus One and HTC Supersonic 4G smartphone heading to Sprint

Hot shoe

A hot shoe is the bracket on top of many cameras and camcorders that traditionally holds a flash unit. To attach a flash, the user slides it into the U-shaped bracket from the rear. Shoes have at least one electrical contact in their centers — when the camera shorts this contact to the bracket ground, it triggers the flash to fire. In addition to that universal function, camera manufacturers may add additional contacts unique to their hardware, enabling communication with the flash for advanced features. The hot shoe may also be used to hold a non-flash accessory in place, such as an always-on floodlight, though it doesn't make use of the shoe's electrical contacts.

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