A CAPTCHA code is a security measure that is used to protect online accounts from unauthorized access by ensuring that the user is human and not a computer trying to break into a password-protected account. It is made up of two simple parts: a randomly generated sequence of letters and/or numbers that appear as a distorted image, and a text box. To pass the test and prove your human identity, simply type the characters you see in the image into the text box.

There is no mention of a CAPTCHA code in Lesco bills in the search results. However, Lesco provides an online billing system where consumers can check their bills by using their reference number or customer ID. When checking the bill online, consumers may be required to enter a CAPTCHA code to prove that they are human and not a computer trying to access the website.