London public transport sign rebooting
Seems to have a modem in it. After about 5 minutes it managed to get an IP, which was partly masked (number changed to “xxx”).
Picture taking on 23 July 2012 at 02h55 (local time).
Seems to have a modem in it. After about 5 minutes it managed to get an IP, which was partly masked (number changed to “xxx”).
Picture taking on 23 July 2012 at 02h55 (local time).
Those signs are usually equipped with a gprs modem
Is there any additional info known about these devices? OS?
Those devices tend to have a non-x86 CPU, flash storage, a ROM with embeded OS (custom linux/(net)bsd variation) and a gprs modem for data retrieval.