shoulder surfing
noun /ˈʃəʊldə sɜːfɪŋ/
/ˈʃəʊldər sɜːrfɪŋ/
[uncountable] (informal)- the practice of watching a person who is getting money from a machine, filling out a form, etc., in order to find out their personal information
- The PIN numbers were obtained by shoulder surfing.
- Learn how to spot shoulder surfing.