arduino for a setup with (n) wireless senders

my project plan is a arduino board with wireless receiver capability to handle incoming longitude/latitude coordinates from different knob-sized senders with gps on board. i’m new in the production and so will ask some mains for realisation.

  • first of all, the gps-hardware with sender must be comfortable in a knob-size for a simple clip-setup on human athletics t-shirt. is there an adequate hardware suggested, with battery electric current

  • and not least incoming gps-data must be handled in a unique matter, as example ‘sender 1’ is identified as ‘1’ on arduino board, to evaluate the data.

glad for any suggestions!
André