August 1, 2024
FlashCall or OTP Call: what is the best authorization system for business
User authorization via one time passwords is a powerful way to ensure legitimate access to digital resources, such as websites or apps. And it obviously adds security in comparison with traditional self-created passwords, and improves customers’ experience.
Historically SMS messaging was used to distribute one time verification codes. However, in the last few years businesses look away from SMS mostly due to constant significant price increase, and are searching for more profitable and beneficial solutions. Luckily, the modern digital market offers such tools. Our todays’ article will be devoted to two of them — FlashCall and Voice OTP.
FlashCall and Voice OTP: what they are and used for
FlashCall — one time password given in the last four digits of an incoming call number. A user who wants to be verified will receive a call from a random number. The last 4 digits of the number represent a one-time password that the user needs to confirm the action.
Voice OTP — a code is given in the incoming call via voice. It is sent to the user in a call. The client answers it, listens to the combination of numbers and enters/calls it to the employee.
Both services for authorization can be implemented for a wide range of scenarios. Most widely spread methods of usage are: online / offline shopping, banking, register or recover a forgotten username / password, use a public Wi-Fi network — enter a verification code, etc.
In spite of the fact both solutions have similar areas of implementation, their features and functionality differ. In the table below we structured a comprehensive comparison, which will serve as an outstanding guide for your business while choosing the service most suitable for its requirements.
FlashCall and Voice OTP: channels detailed comparison
Security
FlashCall: A high level of security — two-factor authentication system
Voice OTP: Two-factor authentication system
Speed
FlashCall: High speed: code delivery within 3-10 sec.
Voice OTP: Code delivery within 3-10 sec.
Usability
FlashCall: For authentication via FlashCall, you need to remember and enter codes, but for almost a half of users, according to our experts, it is inconvenient to go this way
Voice OTP: Voice verification does not require memorizing complex passwords and multiple verification steps
Inclusivity and coverage
FlashCall: Wide coverage, working for stationary phones also
Voice OTP: More reach inclusivity, as working for all categories of users including people with disabilities
Delivery guarantee
FlashCall: No delivery guarantees: Telecom operators’ security systems are monitoring and more and more often block FlashCalls, as well as the probability of code delivery is also reduced by the “smart” settings of modern smartphones
Voice OTP: A channel routing strategy and extensive experience guarantees code delivery
Integration
FlashCall: Simple and quick integration via API
Voice OTP: Quick integration via API
Testing*
FlashCall: Yes
Voice OTP: Yes
Pricing
FlashCall: From 0,0040 €
Voice OTP: From 0,0058 €
Recommendations: how to choose customer authorization solution for your business
Thus, the business is provided with a choice. However, which method is worthy of the company’s attention and investments? To make the right decision, we recommend that you study the capabilities of the services presented in our blog in more detail. And also — answer the questions below.
1. What format of communication with clients do you plan?
Determine your particular business demands — goals for implementing the service (log in, confirm, pay, order, etc.) and frequency with which codes will be sent.
2. What type of code delivery does your customer prefer?
Investigate and evaluate what service will be convenient to the majority of your target audience.
3. What level of coverage do you need?
Consider your customer location — worldwide or domestic.
4. What is the percentage of the channel delivery guarantee?
For 100% guarantee we recommend implementing a cascade including Flashcall-Voice OTP-SMS. You will reach each of your customers with significant cost savings.
5. What are your business resources?
Calculate the budget and resources that can be allocated for the tool. Make content and marketing plans to understand what time and financial investments the campaign requires.
6. How does the company plan to implement the service?
It will be wise to order the solution from a reliable communication platform, and to get a comprehensive one suitable exactly for your business. However, be careful while choosing a partner. How to make the right choice, read in our article.
You can test both services on ImLink platform free of charge and choose the best authorization channel for your business. Please, complete the form on our website and start secure and efficient communication with clients!
* If ordering from ImLink