Temporary PIN requests

Two ideas for PINs

1) it would be extremely useful to have temporary PINs that deactivate after either a specific date or number of uses. 

scenario: if I have a contractor coming to my house on August 15th, I could create a PIN for them and it would only work within the allowed window. Or if I set it to expire after 5 uses. 

2) it would be useful to have scheduled PINs that are only available during specific dates/times

scenario: my housekeeper comes weekly on Wednesdays from 12-2, the designated PIN would only be accepted during those times. If someone tried to use it on Saturday evening (as an example) it would not work, and may even notify monitoring (as a potential option)

Prerequisite for both: expand the number of PINs that can be added to the system