Grumpy_Mike:
Probably.
I don't know.
That might do it, although it is possible that the reader could wait until a card is out of the field before continuing with it's initialisation. Some readers use the turn on time to set calibration parameters to counter effects of local metal fittings. But a reader could take 1.5 seconds to actually read when first switched on. Their are so many unknowns with the reader.
Thanks once again for the insight.
Can i use pinMode and digitalWrite functions to toggle on and off the 5v pin? or is there a better way to do it.