Identifier for Advertisers

Why Trust Techopedia

What Does Identifier for Advertisers Mean?

Identifier for Advertisers (IFA or IDFA) is a temporary device identifier used by the Apple set of handheld devices. It provides device identification while giving end users the ability to limit the device/consumer information accessed by advertisers or apps. A successor of Unique Device Identifier (UDID), IFA is available on all devices with versions iOS 6 and later.

Advertisements

Techopedia Explains Identifier for Advertisers

IDFA replaces and circumvents UDID’s security and privacy issues. IDFA is a like a typical, yet random, serial number that is assigned to each iOS-powered device. Unlike UDID, IDFA is non-permanent and may be activated or deactivated by the user. Based on the user’s activity, the IDFA is sent to the advertising server, which, in turn, displays relevant ads. However, unlike UDID, IDFA does not identify the device or user. Rather, it groups different users by similar search or browsing activity for relevant and targeted advertising.

Advertisements

Related Terms

Margaret Rouse
Senior Editor
Margaret Rouse
Senior Editor

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.