I have just travelled as far as Kazan (only 2 weeks off work!) and knew none of this GPS stuff, I had my garmin streetpilot, a fairly sizeable unit, on the dash all the time when I was travelling at borders etc and never had a problem. I was warned when I travelled in Africa of the same probs but everyone uses them, we just used to hide ours at checkpoints. Pays not t get too hung up about these things me thinks.
landrover 101 ambie
ford escort, morris minor traveller!!
1990 Landcruiser H60. Full rebuild completed 2014
2012 Hilux, mountain top and bedrug with GG AT2s