QR codes are supposed to be reliable and practical but I have encountered some problems, again. This time, to my surprise, the free QR code generator program that I used in 2023 has changed owner or policy and now want to lease the QR codes for quite a sum each month, which is not an option in this case. Probably they have changed the static codes to dynamic codes (see screenshot blow) but how you can do that in retrospect, I cannot understand. Anyway, before I can make new metal signs and place them on top of the old ones, probably only next spring, the videos are temporarily visible on this page