Ease to installation: except not expecting the back of lock (inside to be so large. So your classic door that has (2 holes=1-Door handle Hole & 1-Deadlock Hole) usually 3" apart but won't work unless you drill new 2¹/⁸" hole for deadbolt hole. at least 6" above door handle.Ease of Use: Yale App works great (also google assistant). Super fast no delay and integration with google makes this so simple to use.Security:I like I can give every family member their own made up code 4-8 digits and I can tell who's opening the door at what time I can also give guest access from Monday-Friday and set times of day. Also, say Housekeeper from 9-11am access every Wednesday and it shows up on yale app or Google Assistant. I can even place DOOR IN PRIVACY MODE Where it locks everyone out until I take privacy mode off. You can remove any person with ease and add contact Information and have their own code. It really has great protocols for ease of use.VALUE for Money: YALE is expensive but Worth it, try set up price notification to let you know when on sale. this was thru Amazon thru the Yale Store $199 including wifi module $79 value and for same lock usually & $240-$270. Yale is expensive but you get what pay for. It's worth it.Connectivity: Works on Apple IOS and Android, plus Google Assistant. My Samsung Note 10+ Android connected fast & easy no issues and it was super fast. No delay. When using thru YALE App you have to hold down for 2 seconds so you don't accidentally unlock or lock it. There is an Autolock and Autounlock but I haven't got this setup yet, but definitely going to.