Phoneprinting® Technology

Pindrop’s award-winning device Phoneprinting® engine that analyzes over 1,300 acoustic features of a call.


What is Phoneprinting® Technology?

Acoustic features allow our products to detect subtle anomalies that help to recognize customers, identify fraud and determine its device type, geo-location and carrier.

1,300+ Feature

Phoneprinting technology analyzes more than 1,300 audio features to create a distinct telephony profile, while also revealing true geo-location, device type, and more.


A calls’ metadata allows call centers to see what carrier the call is being routed through. However, this information can be manipulated just like a location. Phoneprinting technology can detect the audio signature of the true carrier to help determine risk and identify the call.


Toneprinting™ technology helps call centers verify their customers by identifying a caller’s device. A phone number match, combined with positive identification of the caller’s device, and examining the DTMF tones coming from the device helps contact centers to authorize customers. 


Phoneprinting technology helps call centers determine where a call originated. One way call centers use this information is to help determine if a phone number is being spoofed. A call might be deemed risky if the caller’s metadata claims it is domestic, but the true geolocation is international.

Repeat Callers

Build unique voice profiles of legitimate and fraudulent callers and passively identify those voices on subsequent calls. Use this data to see detect repeat callers accessing different accounts.

Featured Content

Pindrop Voice Intelligence & Security Report Finds Fraudsters Passed Knowledge Based Authentication Questions 92 Percent of the Time.

Learn the innovative ways bad actors take advantage of certain authentication methods to commit fraud to better protect customer accounts.

*2022 Voice Intelligence & Security Report, Pindrop

Phoneprinting® Technology for call centers

Phoneprinting technology is highly resilient, verifying a legitimate customer or detecting the techniques fraudsters use to hide their true number. This technology identifies multiple callers associated with the same print, allowing enterprises to detect and track fraud rings.

  • Detect Spoofing: Compare caller ID information to true device and location to help find anomalies that indicate spoofing.
  • Detect Social Engineering: Add a layer of security that relies on the audio information the caller can’t control.
  • Phoneprint Signatures: Create unique prints of calling devices that can be used to identify repeat callers.

The Pindrop difference

  • Pindrop’s patented Phoneprinting technology uses the full audio of a call to determine its true characteristics. Call centers use this technology to detect anomalous behavior for first time callers and identify repeat fraudsters. It goes beyond ANI/CLI validation and provides universal coverage regardless of device type and call attempts.

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