VISCon Hackathon 2026 · Campus & Student Life

Find your way around ETH.

10:14:41

Analysis I · Exercise session

HG E 41 · starts 10:15

ScheduleYour day, one tap away.

NavigateA route that knows the floor.

10:15 · On timeRight room, first try.

11:50 · Lunch Crew

Five hungry people.
One group chat.

0messages
0decisions

Socials · Food picker

Where are we
eating today?

  1. 1
    Pick your groupLunch Crew · 5 friends
  2. 2
    Swipe today's dishesDiet, allergens, price and "open now" filter first
  3. 3
    The group agreesEveryone's likes become one canteen, one tap to go

...where's
Helena?

How it works

Built on ETH's own data. Located on your phone.

1ETH data

  • ~12,400 BLE beaconsalready installed for ETH's PolyMaps
  • Buildings, floors, roomsPolyMaps plans + OpenStreetMap
  • Today's Mensa menusreal data, updated daily
  • Courses & lecture roomsVVZ catalogue + room bookings

2On your phone

  • Blue dot with the floorBLE signals + step detection → probability map
    10:14
  • Indoor routesshortest path across floors, stairs & lifts
    10:14
  • One algorithm, two appsSwift (iOS) and TypeScript (web), same results

Position is computed on the device

3Our server

  • Rooms as map shapesPostgres + PostGIS room lookups
  • Group food pickerall swipes → one canteen
    11:50
  • Live friendsrealtime updates, only to friends you choose
    Live