Wireless devices (keyboards and mice) and lost usb dongles...

Hi:

I (and perhaps you) have encountered many situations in which wireless devices requiring a usb transceiver are missing their transceiver. People seem to lose them or throw them away, or leave them in ports when they pass on their laptops and PCs. Such devices are completely unusable without their specific transceiver. The transceivers alone are either 'unobtanium' or ludicrously expensive to buy. Question: Would it be possible to read/decipher the signal used and replicate it using a cheap 'generic' usb dongle as a substitute? Just spitballing here...for you inventive types this could be a nice little moneymaker.