VBA Userform TextBox1_Change() triggering.

Hello,
I have a macro which uses entered value from TextBox1. If a value is given to TextBox1 as a whole, the code runs fine. If a value is entered character by character (scanned with a handheld barcode scanner) the code: TextBox1_Change() triggers on every character.
How to make the macro start only when the whole value is entered (the length of the value may differ)? Maybe there is a way to catch the barcode scanners ENTER?
Extra buttons to manually trigger the code are not an option.

Thank you for your time and help.

P.S. also asked here https://stackoverflow.com/questions/...nge-triggering