Easy as 1-2-3
1. The visitor requests a smart access code (via text, email or a phone call)
2. You, the owner, generate a code that specifies date and timeframe of entry and expiration
3. Visitor receives smart access code and punches it in to gain access.
So Reliable
Best Smart Electronic Lockbox with Two Modes of Access for visitors – Numeric smart access code or Bluetooth
(plus a third mode of access for you – a mechanical key access so you’re never locked out)