The article is about a side-channel attack, where you don't transfer any data, but just observe something (in this case power draw from a wireless charger) to get some information.
In these types of attacks, you don't transfer any actual information, but guess something from observation.
There are more exotic attacks [0][1] which exploit the heat computers generate to exfiltrate data or time power starvation attacks.
In these types of attacks, you don't transfer any actual information, but guess something from observation.
There are more exotic attacks [0][1] which exploit the heat computers generate to exfiltrate data or time power starvation attacks.
[0]: https://dl.acm.org/doi/pdf/10.1145/3133956.3133994 [1]: https://www.wired.com/2015/03/stealing-data-computers-using-...