Parents are bringing back the landline

> kid-specific, adult-controlled landline phone

> allows parents to control the hours when it is in use and which phone numbers are approved to call in to (or be called from) the closed network.

No spam or scam on this phone!

(unless they impersonate one of the known numbers, but this is pretty unlikely, and you don't have to add any POTS number to begin with, you can operate on completely closed network)