I believe that integrating with the IPC mPOS or Linea Pro (barcode scanner/MSR cradles for Apple iPhone/iPod touch) or Infinea Tab (for iPad) would allow technicians to take payments in the field/on the shop floor, and allow easier scanning of labels on iOS apps.

I believe it could be a big selling point for technicians like myself who want to be able to offer payment and technician facilities from one device per person. The cradles can be bought used fairly inexpensively, and the mPOS, or mPOS thin (for iPad POS app integration) could integrate with a payment processor or an app even that works with the PINpad/EFT features. All integration can be done using the free SDK offered by Infinite Perhipherals.

The devices are similar to what many technicians and sales persons have at Apple Stores to allow you to pay anywhere in the store by card.

Offering features such as this (or even integration with the barcode scanner, which should be much simpler) would be a massive step forward for businesses wanting to make a great impression and keep things sleek and on once device. Even if it is integrated over time it's something I'd love to see in RepairDesk.