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# Location Verification without GPS?


- **Date:** Friday, Jul 19, 2024
- **Time:** 15:40–16:10 (30 min)
- **Room:** STAGE 8 (120)
- **Event:** World Congress 2024

## Description

How would you build a sightseeing app that recommends close by sights, without using GPS?

In this talk I will present how to use Telekoms currently incubating APIs to verify a phone number's location close to a given sight, without needing to request the actual phone's GPS, just by the power of the network.

I will go through the general make-up of the server, talking about Ktor as the server, KMP as the JS frontend and how the location verification magic works. 

And obviously I end up in how to send an SMS to the client who signed up for the sight seeing.

## Speaker

### [Mario Bodemann](https://www.wearedevelopers.com/@mario-bodemann)

Developer Evangelist


## Related talks at this congress

- [Remote Mob Programming - At home, but not alone](https://www.wearedevelopers.com/events/world-congress-2024/sessions/47-remote-mob) — Joshua Töpfer
- [Turning Messages into Actions: Building Apps with SMS and WhatsApp Connectivity](https://www.wearedevelopers.com/events/world-congress-2024/sessions/43-turning-messages) — Nathaniel Okenwa
- [No More Post-its: Boost your login security with APIs](https://www.wearedevelopers.com/events/world-congress-2024/sessions/240-no-more-post-its) — Alvaro Navarro
- [Speak, Code, Deploy: Transforming Developer Experience with Voice Commands](https://www.wearedevelopers.com/events/world-congress-2024/sessions/65-speak-code-deploy) — Sami Ekblad