# ASCII, non-printable characters etc

**URL:** <https://forum.kirupa.com/t/ascii-non-printable-characters-etc/311689>\
**Category:** Uncategorized\
**Created:** [July 14, 2010, 7:41am UTC](https://forum.kirupa.com/t/ascii-non-printable-characters-etc/311689 "2010-07-14T07:41:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Esseti](https://avatars.discourse-cdn.com/v4/letter/e/bb73d2/32.png) [@Esseti](https://forum.kirupa.com/u/Esseti)\
**Post date:** [July 14, 2010, 7:41am UTC](https://forum.kirupa.com/t/ascii-non-printable-characters-etc/311689/1 "2010-07-14T07:41:16Z")

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Is there a way, to add a ‘hidden’ character to one of two identical strings, so that when they are compared by == it returns false, but they still look identical to the user?  
For instance:  
String1: “test”  
String2: "test "  
They would look the same to the user, but I don’t wan’t to necessarily use space as a differentiator.