Well this was actually a question I was asked about being able to transfer photos directly from a camera when taking photos of products for online shop fronts. The user asked if it was possible to enable a camera to send the photos to a PC directly without the need to remove the card and go to the PC.
Now the options are a wireless capable camera or a remote card reader with software to upload and clear the images on a regular basis plus a usb extender. Then I thought about the options for a wireless sd card and was able to locate the Eye-Fi – which is exactly that.
You will find more info about the Eye-Fi here