The TfP contract is an agreement between model and photographer in which the model is not paid by a fee but with the results of the joint work. In the past, these were classically pictures or prints, hence the term TfP (Time for Prints). In the context of digital photography, the model usually receives a CD with pictures of the shooting in return. One speaks then also of TfCD and/or TfDVD.
My TfP contract can be downloaded here if required:
TB Photography TfP Contract (German)