Keeping track of frames and exposures

[OldBikerPete]

Like many, my mobile 'phone (Nokia 6120) has a camera and voice recorder function which I press into use to make field notes.

[lxdude]

Some 35mm and MF cameras imprint exposure data in the film rebate, but I have long forgotten which cameras do this. Is it the Contact RT??

I know the Pentax 645n and II imprint it on the rebate.

[Poisson Du Jour]

I know the Pentax 645n and II imprint it on the rebate.

I see.
In hindsight, as much as it might be useful over the lightbox, I'm not all that certain imprinted film is a better method than the time-honoured notebook and pen (or voicecorder). Each to his own...