Instant messaging is an open system in which anyone can send messages to anyone else regardless of which im software they both are using.

false

Explanation:

Based on the information provided within the question it can be said that this statement is completely false. This is mainly due to the fact that an instant message relies on the receiver having the same instant messaging software as the sender in order to receive the message. Otherwise the message will never be sent or the individual who was supposed to receive the message will never get it.

answer; /// radio frequency identification;

answer the law of increasing costs;