About Phoneprinting

Bring transparency to the phone channel with Phoneprinting

Pindrop Security is the inventor and sole developer of Phoneprinting™, a patented technology that analyzes phone calls to identify malicious behavior and verify legitimate callers. Phoneprinting is at the heart of Pindrop’s Call Center Anti-Fraud solutions, used by some of the largest banks, insurers, brokerages and retailers in the US to detect fraud and verify customers.

In 30 seconds, Phoneprinting takes an audio call and breaks it down into 147 unique call features to create a distinctive identifier for each caller.

Pindrop Phoneprinting reveals:

Oval 32 Copy 17 + Page 1 CopyCALL TYPE: Is the caller using a cell, landline, or VoIP phone? Pindrop research indicates that 53% of fraudulent calls are made using a VoIP line, compared with only 7.2% of legitimate calls.


02GEO LOCATION: Where is this call really coming from? Is it international or domestic? Does the location indicated by the call audio match the phone number reported by Caller ID?


Oval 32 Copy 2 + Shape + Shape CopyUNIQUE PHONE: Has this caller been seen before? Fraudsters often change phone numbers, but it is much harder to change the audio characteristics that Pindrop uses to create a unique identifier for the call audio characteristics.


The Phoneprint is highly resilient –detecting the techniques fraudsters use to hide their true number or impersonate a legitimate caller. In addition, this technology identifies multiple callers associated with the same phoneprint, allowing enterprises to detect and track fraud rings. Phoneprinting is the only technology that can see through these attacker tactics.

Phoneprinting detects these fraud tactics:

caller-id-orangeCALLER ID SPOOFING: Callers deliberately falsify the telephone number or ANI relayed as part of the Caller ID information. There are hundreds of free phone apps that make it easy to spoof a phone number. Phoneprinting compares the information reported with Caller ID to the true device and location information to find anomalies that indicate spoofing.


voice-distortion-orangeVOICE DISTORTION: Criminals have many techniques for hiding their voice over they phone. Some may be good actors or fake a bad connection. Others use sophisticated voice distortion technology. Phoneprinting relies on the total audio of the call – much more than the sound of the voice alone.


vishing-orangeSOCIAL ENGINEERING: Fraudsters are practiced in the art of manipulating people into giving up confidential information or breaking normal security procedures. Phoneprinting adds a layer of security that does not rely on what the caller is actually saying. Instead, it looks for risk factors in the information the caller can’t control.

How Phoneprinting Works



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