Is echo checking normally used in any modern systems?

Question

I know that echo checking is not considered as a good mechanism. However, I want to know whether are systems even today which use it?

Edit:

Actually, this was a part of my homework but I couldn't find much resources online on this so asking here.

Answer 1

Terminals often use local echo, but remote echo can be turned on and is in this sense echo checking. Check out this paper on telnet:

Telnet and the Telnet Protocol (IBM Corporation White Paper) http://bandwidthco.com./whitepapers/netforensics/telnet/Telnet%20and%20the%20Telnet%20Protocol.pdf