Please read PR Photograph specifications in the below link:
https://www.canada.ca/content/dam/i...ormation/applications/guides/pdf/5445eb-e.pdf
The following has been mentioned:
*The back of one (1) photograph must:
bear the name and date of birth of the subject,
as well as the name and complete address of the
photography studio
bear the date the photograph was taken
the photographer may use a stamp or handwrite
this information. Stick-on labels are unacceptable.