Stop using fingerprint on your phone
You may think that it is better to have fingerprint protection on the computer, phone, or tablet device you are using when you buy it. But that security may not be as secure as you might think, due to software and hardware flaws in the device, misuse of the country’s legal system, and so on. But is it okay to use a fingerprint? Let’s find out.
Product errors in software and hardware make it easier for others to unlock the phone. These are just three of the many technologies currently in use in the world. They are Capacitive, Optical, and Ultrasonic
In 2013, Chaos Computer Club, Europe’s largest hacker group, easily unlocked an iPhone 5s phone with a capacitive sensor. Take a high resolution (2400 dpi) photo of a fingerprint placed on a glass, print the fingerprint well, print it with a laser printer with a resolution of 1200 dpi in solid toner on a transparent surface, apply white wood glue and remove after drying. , By aerating the mouth slightly and placing it on the TouchID to create moisture like a normal hand.
In May 2019, the YouTube channel Max Tech showed you how to access an OnePlus 7 Pro phone with an optical sensor. What he did was put a circle of gum on a sheet of foil, put his finger on it, take it out after drying, and put it on the phone. The phone detects fingerprints very quickly and unlocks immediately.
In October 2019, Lisa Nielsen, an English woman, discovered that anyone can unlock their Samsung S10 phone with an ultrasonic sensor. She applied a gel cover that completely covered the phone, revealing that it would allow others who put their finger on the fingerprint to unlock it as well. Samsung later fixed this with an update.

Practical issues

Most fingerprint sensors are resistant to significant levels of scratches, but they have many other practical problems with use. For example; It is very easy to unlock the phone to a friend in the hostel when you are asleep. Even more serious is the case of a criminal who forces you to disclose your personal information. If you cut off your finger when you refuse, it will be a tragic moment. To prevent this problem, modern phones have introduced features such as Lockdown mode across the operating system. This will prevent you from unlocking the phone without using a PIN / Password. Something really memorable is safer than a finger.

Fingerprints cannot be changed if hacked

Modern phones allow you to add a fingerprint of about 4-5 fingers. This data may be leaked due to a vulnerability in the software of the phone. Or, as we described earlier, someone may be copying and pasting your fingerprints. For example, an abductee may be unconscious or forcibly fingerprinted. If their biosecurity data is leaked, the person will never have to use new devices. Because we even protect our Password Manager services with Fingerprint, everything will be lost if a fingerprint is copied physically or electronically.
The best way to protect a device is to use a good password. How long does it take a computer (hacker) to guess your password can be verified by looking at a website like However, typing in a long password can be a hassle when you suddenly need to unlock your phone. One way is to use a shorter and harder one to guess instead of increasing the length. For example, it takes longer to guess “[email protected]$w0rD” than “Password”. For phones, a PIN is appropriate. Pattern lock is also easy to apply, but if you put a screen protector that holds the sweat in your fingers, it will not fit because it will be noted on it. Accordingly, using a higher number of PINs will give you a significant level of security.


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