Your guest doesn't listen for buzzers. They look at their phone.
When the order is ready, your team taps "Ready". "Your order #42 is ready" appears on your guest's lock screen.

What it gives you
The message arrives where they're looking
On the lock screen, without your guest having to open an app.
No extra devices
No buzzer set to hand out, collect and charge. A QR code at the counter is enough.
No phone number
Your guest doesn't give a phone number, and there are no costs per message.
How it works
Your guest has the card in their wallet and orders as usual.
When the order is ready, your team taps "Ready".
The guest's phone lights up on the lock screen.
Quick questions
How does the pickup call work?
When the order is ready, your team taps "Ready" and the message appears on your guest's lock screen.
What does my team need at the counter?
A smartphone or tablet for scanning. No changes to your till system, no extra devices.