ACCESS CONTROL QR CODE

How they work (in simple terms)

1. A system generates a unique QR code tied to a person, device, or time window

2. You scan it at a reader (or a camera scans it from your phone)

3. The system verifies it (often online)

4. If valid → door unlocks / barrier opens

Typical use cases

• Office buildings & coworking spaces

• Apartment complexes

• Parking garages & vehicle barriers

• Event venues & stadiums

• Hotels and short-term rentals

• Factories, labs, and secure facilities

Static vs dynamic QR codes

• Static QR codes

  • Always the same

  • Simpler, but less secure

  • Often used for low-risk access

• Dynamic (time-limited) QR codes

  • Change every few seconds/minutes

  • Can expire automatically

  • Much more secure (common in modern systems)

Why they’re popular

• No physical cards or keys

• Easy to issue and revoke remotely

• Works with smartphones

• Great for temporary or visitor access

If you want, I can also explain:

• how secure these are compared to key cards

• what tech is behind them (cloud, encryption, scanners)

• or how companies usually implement them in real buildings