FILE - In this Feb. 25, 2014 file photo, theSamsung Galaxy S5 is displayed at the Mobile World Congress in Barcelona, Spain, Tuesday, Feb. 25, 2014. Leading tech companies are increasingly nudging consumers to use their own fingers, faces and eyes as digital key to unlock phones and other gadgets. But there are downsides: Hackers could still steal your fingerprint, or its digital representation. And police may have broader legal powers to make you unlock your phone. (AP Photo/Manu Fernandez)

Thanks for the Jan. 14 Washington Post Magazine article "Washington vs. robo callers." The true source of robo-call evil is the big telecommunication companies.

A raft of information precedes every phone connection so that the provider knows what account to bill. Regardless of spoofed phone numbers and fake caller IDs, the providers ultimately know who is responsible. Just ask them and see if they can say that they have no idea whom to charge for using their services. The ugly truth is that these providers have, for decades, encouraged and helped telemarketing because telemarketers are great customers for their phone services.

What really frosts me is that I can finally get Nomorobo for my cellphone, but I have to pay for that "service." So the provider is making money aiding and abetting the telemarketers and now is going to rake in more from consumers to keep those calls from getting through. They must be laughing all the way to the bank.

Michael J. Mercer, Vienna