In addition, its interesting to notice majority of Europe has different writing of 1 and 7 [1]

Coming to USA 25 years ago I and so many issues typing "1" my way and people thought it was "7". In addition, European "9" looks like small "g" because of the curly tail at the bottom.

Once I was suspended at work for 2 weeks, because they thought I used someones else SSN [clerk entered it wrong in their system]

[1] https://english.stackexchange.com/questions/62586/why-is-1-h...