There in Vilnius (and a couple of other bigger cities) you just put a sticker with barcode in the corner of the windshield, register it with SMS and from then o

There in Vilnius (and a couple of other bigger cities) you just put a sticker with barcode in the corner of the windshield, register it with SMS and from then on you can pay by texting something like "PV 3 R" — which means parking in Vilnius for three hours in the red zone (prices differ by zones). That's it. If you wish you can get SMS with reminder that your paid time is about to expire.