To strengthen the security of our systems, different authentication applications are being used that ensure maximum safety. All of this has become the basic requirement for almost every major company.
One of these methods is OTAC or one-time authentication code that is being adopted by almost every company. The message sent using this remains valid for a limited time and hence is a good replacement for two-factor authentication.
swIDch provides this guide where they tell about how their OTAC system works. This guide is easy to read and has beautiful graphical explanations for better understanding. Get your hands on it today!