| ATM | Automated Teller Machine |
| CI | Confidence Interval |
| CNS | Coagulase Negative Staphylococcus |
| COVID | COronaVIrus Disease |
| DNA | DeoxyriboNucleic Acid |
| HMI | Human–Machine Interface |
| IR | Infrared Light |
| IT | Information Technology |
| MCD | Mobile Cellular Device |
| MRSA | Methicillin Resistant Staphylococcus Aureus |
| KMP | Keypads Device |
| PC | Principal Component |
| PCA | Principal Component Analysis |
| PLN | Polish zloty (currency) |
| SD | Standard Deviation |
| TMP | Touch screen Mobile Phone |
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