Captchas prevent the use of what in creating electronic contracts?

ANSWER:

CAPTCHAs principally avoids trick, infections or different malicious records which gives destructiveness to the gadget or the system.

EXPLANATION:

Since it a visually empathized puzzle which guarantees the action whether it is human or a gadget and furthermore gives a shied to all the obscure sorts of stuff.

During this modern technology many online frauds have been improved, Henceforth to overcome from these issues CAPTCHAs plays a major role for the security purpose. So that you can have safe browsing.