I thought I would be able to open it remotely. Do I need to purchase your gateway for this to work ?

Question 

I thought I could open it remotely.  Do I need to purchase your gateway for this to work?

Answer 

Answer: You can remotely control the lock from anywhere via WiFi if you have a sifely gateway installed nearby the lock.

Some passcodes can be generated remotely without a bluetooth/wifi connection. See this article for more information. All you need to know about passcodes

Note: The sifely gateway is sold separately.