App is only for use with SportIdent event timing equipment (SI BSF7/8 base stations) connected to phone via OTG USB cable.
To be used with SIAC (Air) punching chips, smartphone should be connected with Sportident Radio Dongle USB stick via OTG cable.
Last punch is passed from Base station or via Radio Dongle to the app. It is send via Internet to Orgeo.ru live results server in realtime. Custom server could be developed.
Could work not with every model of mobile devices because of different USB-hosts. Test your device.
Do not forget to pack germeticaly all equipment before setting in the forest.