Everyone who has a valid electronic pass for Prague, whether on your physical Lítáčka card, on your PID Lítáčka phone application, or linked to your payment card, can use the pink Rekola cycles or blue Nextbike cycles dotted around the city. You may use them for two rides, each lasting up to 15 minutes. For the Rekola bikes, you can extend rides to 30 minutes for free if you pay CZK 59 once a month. Find more information, in English, here.