Experience with POS device, like printer, connected to tracking device

Yes, as those equipment is mostly used in hospitality. For us its a technical device.

Bart how are you connecting the POS to the tracker? How are you looking to capture the last temperature the device will send or you will poll? I assume this is for a fuel tanker truck?

Both options could work if Movotek SDK can:
1) fetch information from Wialon
OR
2) receive and process SMS

I think it is very probable that at least the second option is implemented.

But ... the SDK of Movotek is written in C, and it can be a problem. Maybe a POS with a Java interface would be a better choice?

why not using a simple epson compatible termoprinter (typical pos hardware) which is connected via RS232 to a gps tracker which has a serial connection like the Galileosky or Teltonika or BCE or GoSafe or or or hardware.

you should look for a HW which has a transparent serial connection. than you send automatic commands via gprs which included the values of the sensors.

for example have a button which sends a "user pressed button" to Wialon, than create a notification which sends a custom_msg to the printer via gprs. NO SMS costs! only thing: device should be always online..

Wolf.

p.s. hardware gurus in gurtam are very very helpful in implementing additional commands of your choosed hardware if they is common and good :-))