A secure 2 factor authentication service has security as its main objective. However, security is not always the only objective. Some providers specialize in making companies in the health and other critical sectors comply with regulations. Some of these companies are only interested in compliance only.
Security and Compliance
The problem is that some of the providers are so used to serving such clients that they forget that a secure 2 factor authentication service should also provide security. Organizations seeking to secure their sensitive information as well as transactions should check to see if the kind of system the providers will implement is suitable for them.
The Mobile Phone Factor
Another myth is that two factor authentication (2FA) services are all the same, with minor difference between them. This used to be the case before the proliferation of mobile phones world wide. The token systems used for 2FA then were less varied than they are now.
The current two factor authentication mobile systems have added an almost infinite number of possibilities that can be used to provide a stronger security system. The options vary from mobile apps for Android and IOS, text messaging system and fixed line verification systems.
Availability of Devices
The different systems may not be suitable for you situation. In fact, if you pick the wrong system you may discourage the user to use the 2FA, further compromising the security of the system. Mobile apps for smart phones are the best if they are designed properly, however not everyone can use them or has the required device.
Two factor authentication mobile systems for text messaging may be a more appropriate option where people have different types of devices. It may prevent users from abandoning the process and compromising security. It is therefore important to do an analysis before choosing the type of authentication process to implement.