New Smart Signal: Active Call Detection for iOS and Android

Fingerprint has introduced Active Call Detection, a mobile Smart Signal for iOS and Android that reports whether a user is currently on a cellular or VoIP call through a simple active_call true or false result. Available from SDK version 2.16.0 without requiring extra app permissions or collecting call details such as phone numbers, duration, or participants, the feature is intended to help identify possible voice-phishing, or vishing, scams that traditional fraud tools may miss because victims use their legitimate devices, credentials, and locations. The signal is most useful when checked during sensitive actions such as one-time passcode entry, transfers, beneficiary updates, account recovery, and high-risk settings changes, where an ongoing call may indicate that a fraudster is coaching the user. Because many calls are legitimate, the company recommends using the signal as additional context rather than automatically blocking activity, with potential responses including warnings that the company is not calling, step-up authentication, transaction delays, manual review, and pattern analysis alongside other fraud indicators. Active Call Detection is offered on Pro Plus and Enterprise iOS plans and Free, Pro Plus, and Enterprise Android plans.

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