With the rise in popularity of online transactions, ATMs have become a familiar sight. But have you ever wondered why most ATM keyboards are made of metal? Let’s explore the reasons behind this design choice together!
1 Why ATM Keypads are Usually Made of Metal
Information security, especially password protection, is a top concern for many individuals. When it comes to ATMs, passwords are critical. Compromised passwords can lead to significant financial losses for account holders.
Password security is of utmost importance
This is why banks opt for metal keypads for their ATMs. Metal keypads play a significant role in securing and preventing the leakage of customer passwords, thereby reducing the risk of theft from your account.
2 Benefits of Metal ATM Keypads
According to a research group specializing in security at UC San Diego, pressing ATM keys leaves behind thermal traces. To the naked eye, nothing seems amiss. However, with an infrared camera, you will notice red streaks indicating the pressed numbers.
Plastic keypads can expose your password through thermal traces
You might think that knowing the numbers without the order would still make it challenging to guess the password. Here lies the danger of heat-retaining materials like plastic.
When using an IR camera, you will see traces of varying intensity, allowing one to infer the sequence of pressed buttons. This makes it easier for criminals to obtain your PIN.
Metal keypads have good electrical conductivity, and their temperature changes rapidly, securing your PIN.
The difference lies in the electrical conductivity of metal. When a key is pressed, the temperature of the keypad changes rapidly. This makes it challenging for criminals to obtain any useful information from the keypad’s temperature, effectively safeguarding your ATM password.
Tip: What if you have to use an ATM with plastic keys?
If you find yourself at an ATM with plastic keys, there’s a trick to prevent password leakage.
After completing your transactions, place your hand on all the keys before leaving to transfer your body heat to them.
Place your hand on all the keys after completing your transactions
By doing so, you’ll raise the temperature of the keys, making it challenging for criminals to discern your password, even with an IR camera. However, as criminal tactics evolve, it’s essential to stay vigilant during transactions.
Note: Remember to use hand sanitizer after touching ATM keypads to maintain good hygiene!
Now you know why ATM keypads are made of metal. Stay alert whenever you use an ATM, and share this knowledge with your loved ones. Thank you for reading!
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