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What is an air tag

AirTag: Apple’s smart tracking device

Core functions and positioning capabilities

AirTag is a small tracking device launched by Apple, designed to help users find items such as keys, wallets, backpacks, etc. Its core functions revolve around close range search and global network tracking:

Close range positioning: By playing sound through the built-in speaker (such as “I’m here”) or utilizing the precise search function of the iPhone (based on the ultra wideband U1 chip), the distance and direction of the item can be displayed, and the error can be reduced to a few inches.

Long distance tracking: With the help of a search network consisting of billions of Apple devices (iPhone, iPad, Mac) worldwide, it anonymously receives Bluetooth signals from AirTag and uploads the location to iCloud. Users can view real-time location in the search app, which is fully encrypted and protects privacy.

Lost mode: When enabled, users will receive notifications when other devices detect AirTag; Support setting NFC contact information, allowing others to easily access the owner’s information by simply tapping (NFC technology is the same as Apple Pay for public transportation payments).

Design and Hardware Features

AirTag continues Apple’s minimalist style, with the following hardware specifications and details:

Characteristic Details

Appearance diameter of 31.9 millimeters (about the size of a coin), thickness of 8.0 millimeters, weight of 11 grams, white front, metal back engraved with Apple Logo21

Waterproof and dustproof IP67 level, can stay in 1 meter deep water for 30 minutes, resistant to frequent splashing and dust 12

The battery adopts a replaceable CR2032 button battery, with a range of about 1 year. When the battery is low, the iPhone will remind to replace it

The connection method supports Bluetooth short-range communication, U1 chip ultra wideband positioning, and can be paired with iPhone/iPad with just a touch

Personalized official website purchases can be engraved with text, emoticons, or mixed for free, paired with colorful buckles and Herm è s co branded accessories

Privacy and Security Mechanisms

Apple strengthens privacy protection from the design source, with core measures including:

Intelligent Optimal Response

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Data encryption: Location data is only visible to users and is not stored on AirTag or Apple servers. The device transmitting the data remains anonymous and is encrypted end-to-end.

Anti malicious tracking: If someone else’s AirTag follows the user for a long time, the iPhone will issue a reminder; When not claimed, AirTag will automatically play sound to avoid being used for illegal tracking.

Security update: In response to abuse cases (such as tracking harassment) that occurred in 2021-2022, Apple has optimized the reminder mechanism through software updates, and some regions have pushed for legislation to prohibit the unauthorized use of tracking devices.

Usage scenarios and compatibility

AirTag needs to be used in conjunction with Apple’s ecosystem devices, with the following specific requirements:

System version: iPhone requires iOS 14.5+, iPad requires iPadOS 14.5+, Apple Watch can receive notifications 2.

Typical scenario: Tracking keys, luggage, pets (with anti drop accessories), sharing function supports up to 5 people to jointly manage the same AirTag1.

Accessibility features: Compatible with iPhone voice over, color reversal, braille display, and other accessibility features.

Price and purchase information

Price: Single piece set costs 229 yuan, four piece set costs 779 yuan, and official accessories (such as keychains) require an additional purchase of 2 yuan.

Release date: Global launch in April 2021, currently available for purchase through Apple’s official website, Apple Store, and authorized distributors.

AirTag, with its Apple ecosystem advantages and privacy design, has become a benchmark product in the tracking device market. However, it should be noted that it relies on the Apple device network, and Android users cannot directly use its core functions.