Model Release - Guidelines:
Publishing photos of people becomes more and more restricted, in particular with the new EU law on data privacy from May 2018 even in public places. A smile, while looking into the camera, is not any more interpreted as consent. 
To be on the safe side, every photographer should ensure to have the written agreement of the model before any photo session. Templates for a 'model release' are priovided below and should be adapted to the particular case. It is very important that every word is understood by the model.
The Model release should be discussed, updated and signed before the shooting. 
No Model release -> no shooting.
TEMPLATE: *** English version *** French version ***