No, the iPhone 5 doesn't have fingerprint passcode. Only Apple devices with Touch ID can have finger passcodes. The iPhone 5s has Touch ID but the 5 doesn't.
A fingerprint reader captures an image of a person's fingerprint and converts the unique patterns into a digital code. When a person places their finger on the reader, it compares the captured fingerprint with stored fingerprint patterns to verify identity. If the patterns match, access is granted.
A fingerprint reader
One can protect their valuable technologies with a Biometric fingerprint reader. No one else but the original user can access technologies protected by the fingerprint reader.
A fingerprint reader works by using an imaging sensor to capture a fingerprint digitally. It is then compared to an existing image to determine if access is granted.
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The best way to find more info about fingerprint reader is to visit the manufactures homepage, because there are some differences between fingerprint readers models. The common fact about fingerprint readers can be found on wikipedia for instance.
Someone can purchase a Microsoft fingerprint reader from the website New Egg. The website New Egg sells multiple fingerprint readers that can be used to protect one's computer.
Biometric
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There is an app in the Apple Store
If you bought an iPhone 5s from eBay and it is locked with a fingerprint lock, it will not be possible to unlock it if you do not have the Apple account.
One can download a scanner bar code reader from the iPhone 5 from the Apple app store. There are many applications that can achieve this, some of them are: Scan Life, Scan - QR, Red Laser.