Imagine, for a moment, this harrowing scenario:

Hi, here's the important code you requested:
Az3971InwlI1mkEnDIWnl11Il

You'll have to enter this manually, using a remote control, one character at a time.
The input field will reset after 60 seconds, so better move fast.
Oh, and one last thing...
Some of those are lower-case Ls, and some are upper-case Is.

Good luck!
- Serious Business Co.

It’s impossible. It’s insurmountable. You’re doomed.
Unless…

I or L Checker

Using this site, you can see which characters in some text are I, L, or 1.

(All in all, this is a pretty silly one. Still though, it’s helped me out at least twice in my life! Maybe it’ll help you some day?)

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