The small card over Google Maps

So a request can reach you while you follow a route. Optional; Taxista works without it.

• The small card over Google Maps (display over other apps). Taxista's own small window, so a request can appear while you are following a route. You can refuse it; then a request waits in Taxista until you open it.

Taxista opens Google Maps with Google's public directions link and never reads, presses or closes anything inside Maps. It knows you have arrived from your own position at the pickup, or when you tap Arrived.

If the switch is grey and will not move, see A switch in Settings is grey.