How do you design a system that authenticates different types of users without having users logged into the system? This was one of the more challenging aspects of the project. I decided on using Access Keys with unique id's to identify and connect users to cards, pins, locations, etc. Everything is stored in Firebase as lookups.

• Access Keys
  • ID
  • Name
  • Type (admin, user, temp)
  • Location (lookup)
  • Expiration Date
  • Deleted
  • Registered
  • Enable
• Location
  • ID
  • Name
  • Mode (used for provisioning cards)
• Pins
  • ID
  • Access Key (lookup)
  • Location (lookup)
  • PIN
• Cards
  • ID
  • Access Key (lookup)
  • Location (lookup)
  • Card Number
• Doors
  • ID
  • Access Key (lookup)
  • Location (lookup)
• Logs
  • ID
  • Access Key (lookup)
  • Location (lookup)
  • PIN or Card or Door