Hackers used to recharge batteries using phone lines at least in the 80s. It was suitable source of power for trickle charge (low current).
But modern (90s) switches have mechanism to detect such abuse or faulty phone line/equipment. People get billed/sued for damages from the phone company, and arrested/prosecuted for violating relevant laws.
“An engineer explained to us that hundreds of ear impressions were gathered in the name of research, and while each one obviously boasted its own unique shape and size, one single characteristic remained uniform across the board: the entrance into the ear canal is not a perfect circle, it's an oval.”
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Hackers used to recharge batteries using phone lines at least in the 80s. It was suitable source of power for trickle charge (low current).
But modern (90s) switches have mechanism to detect such abuse or faulty phone line/equipment. People get billed/sued for damages from the phone company, and arrested/prosecuted for violating relevant laws.