Wireless SD Memory Card

Wireless capability is being built into some digital cameras today, but here is a device that you can add to an existing camera to make it WiFi-compatible:

The Eye-Fi is a 2 GB SD (Secure Digital) memory card that incorporates built-in WiFi to transmit images wirelessly from your digital camera to your computer. Using their provided software, you can also have those photos automatically submitted to a photo sharing site of your choice (out of the list of available choices).

Photojojo.com says that they will soon offer a CF (Compact Flash) adaptor so that you could use the Eye-Fi card in a DSLR using CF-type memory.