Don’t they need power memory or etc??
In: Engineering
Yes, they need power, have a CPU, and need memory. But the amount of power required for small electronic devices is tiny.
Think Pocket Calculator or Digital Watch (still a pretty neat idea). They run on one or two button cells for months or years, and ATM skimmers are just small electronic devices. The skimmer might only be in place for a few days, so a button cell will be more than sufficient.
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