Kolejki do sklepu są nadal na 20 minut to rozkminiałem kołko od wózka.
Technika balszaja :) How do they do it?

When a trolley passes through it (red line) a signal is sent to a
receiver in the wheel and triggers a brake, bringing it to a halt

http://news.bbc.co.uk/1/hi/uk/2179891.stm
http://news.bbc.co.uk/1/hi/wales/north_east/5237954.
stm
https://forums.digitalspy.com/discussion/1300187/exi
t-to-our-local-asda

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