1) Acted as a two way radio - verbal communication with any other device on the same frequency *ABSOLUTE MUST*
2) Could communicate with a central server - via WiFi as the MAX distance is only about 100KM???
3) Allow custom software to be run on the mobile device - a web page pulled from the central server would be ideal
4) Small and light weight and cost effective replacement for traditional 2 ways
5) Some kind of distance measuring equipment as well would be awesome
Not even sure what I should be looking for...
From what I remember WiFi devices are capable of distance calculation? I don't need vectors, but just distance travelled...
Are there kind of PDA's or hand held device which is capable of displaying a web page, acting as a two way radio and also capable of communicating with a server?
<b>Edit:</b> Non-Windows based would be prefered...
Any suggestions?
Cheers