How It Works
The Nohmad Terminal brings together two modern technologies. A portable electronic ID housed in a durable stainless steel can called an iButton™, and the GPRS wireless network used by mobile phone users worldwide.
- GPRS is a data service available to users of GSM (Global System for Mobile Communications). Unlike a normal phone call, GPRS connections are 'always on' and are charged by the amount of data transferred instead of the length of time the call is made for. This is ideal for a real-time device like the Nohmad, where data has to be sent to the host immediately but occurs at irregular intervals.
- Each iButton™ has a unique and unalterable identity which is used by the Nohmad to identify individuals using the system. A user simply touches their iButton™ onto the Nohmad and the ID number is read instantaneously. Visual and audio indicators provide user feedback.
- The Nohmad adds the current date and time to the user's ID and sends this data as a TPC/IP message to a host server, anywhere in the world. The information is usually available for processing within moments. If the GPRS network is temporarily unavailable, Nohmad stores the data in internal memory and then sends the stored data as soon as a network connection is re-established.


