As Tore mentioned, Topaz is the leading manufacturer of signing pads. Their sample code even has VFP examples.

>Someone knows a good signing pad, which is a device where the client can leave a signature on a device and this gets saved with the transaction?
>
>I wonder how they are working, if it is just an image file, or some other information, and if those devices have their own sdk's or there is a standard for it?