It seems that the TouchID technology that little by little are integrating all new iOS devices has led to developers take advantage of it to launch compatible applications with this identification system, both for use on the device itself and also as an alternative security method on Mac.
If we look back we will see how another application called previously existed Fingerkey, it claimed at its launch to achieve the same as MacID, but contrary to what would be thought at first, it received a lot of criticism due to an inefficient system that failed many more times than it supposedly should, although it is also fair to mention that in later versions the system has been polished and it seems that it is now more stable, according to users say.
Returning to MacID, we see that the system is very similar to FingerKey, that is, it would use the fingerprint sensor of our iPhone or iPad to carry out the unlocking of the Mac in question. For this, this application would use the Bluetooth 4.0 protocol, which integrates an LE (Low Energy) profile, so consumption should be very tight if we have this pairing option with the Mac activated.
The security offered by this system is another important point that the developers have taken into account. MacID uses AES-256bit encryption for communication with our Mac, being even capable of associating more than one Mac at the same time to be able to carry out the unlocking of all of them from the same mobile device. For its part, for the unlocking to work, we must install both the application for iOS and the one for OS X, in the latter case being a free application.
The price of this application for iOS is 3,99 Euros and you can download it from the App Store by consulting the previously compatible Mac models on the developer's website from this link or in the image attached to these lines.