DO NOT use the wink hub.
Samsung Connect is a better option. The wink hub does NOT allow you to set or delete codes in advance. I used the wink hub and I have been asking them for a year to add a fature to set and delete codes in advance but they are not interested.
You can use Samsung hubs and get third party software (RoyBoy) that will allow you to set and delete codes.
Why is this terribly important. Well I travel for work and therefor I am not always in the same time zone as my guests. If I set the codes in advance and give the code to an incomming guest (even telling them the correct check in time) there are guests that will show up and try to get in before earlier guests leave. If I don't set the codes in advance I risk WInk being off line and not available to set the code. If I do not give a code to the guest at least a day early the guests get nervous that they do not know how to access the location.
Every morning I have to get up at 3AM to set and delete codes because of time zone issues. Its crazy. I am currently in South Korea for work and as soon as this project is complete and I am able to return to Colorado, I will change from a Wink to a Samsung hub and stop this madness. You may not be in a different time zone, but wouldn't you want the peace of mind that comes with setting things up in advance and not worrying that you might be busy or on vacation or jsut not available at the exact time when a code is needed.
Wink has programers. It's simple coding. Why can't they fix this glaring issue and add the capability of scheduling the lock codes?