Bluetooth terminals (internet) just eliminates the cord, hard-wire to internet.
Mobile credit card processing is often confused with wireless credit card processing as they are both able to operate on the go, without a need to connect to a landline. The difference, however, is that mobile credit card processing is done via a merchants cell phone. Merchants would download the free app with their Proudly account, and in some cases, need a particular piece of equipment that attaches to the phone to enable the processing of the transaction. Proudly also offers a mobile credit card terminal that works off of the same system as a cell phone.