TIS and INTEC Add Transaction Authentication to Phone-Based Identity Verification Service

TIS Inc. and INTEC Inc., members of the TIS INTEC Group, announced the launch of a transaction authentication feature for their 'Phone Authentication Service' on June 1, 2026. Transaction authentication is a method that ensures that critical procedures or transactions have not been tampered with and align with the user's intent. By adding this feature, the service now performs identity verification via caller ID and transaction confirmation simultaneously, preventing unauthorized procedures. TIS provides the API infrastructure, while INTEC provides the phone network infrastructure. In recent years, phishing-related fraud has become a major social issue. With the theft of IDs, passwords, and one-time codes, traditional multi-factor authentication is no longer sufficient. TIS and INTEC have been updating their service, including adding real-time phishing countermeasures in April 2025. This new feature allows users to confirm transaction details via voice guidance during the authentication process, enabling them to reject unauthorized transactions even if their credentials have been compromised. Key features include high-reliability authentication, a user-friendly voice guidance system that requires no special apps, and cost-efficiency due to the lack of dedicated hardware. The companies will merge on July 1, 2026, to form TISI Inc.