I also agree. This is exactly the feature/functionality I'm looking for. For the person who said that if guests can't figure out the last 4 digits of their phone number when given the whole number, I can tell them without a doubt, some will not figure it out....Some are tired, some are confused, and yes, we hosts know who have been doing this for a long time, there will undoubtedly be guests who cannot figure it out.
So, yes, please add the feature for the last 4 digits of a door code being the last 4 of the cell number of the guest.
Thank you.