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Cars and trucks can be tagged in many different ways. Many tags are designed to be placed directly on the glass of a windshield, others are designed as hang-tags for a rearview mirror or to be placed on the dashboard.
Absorption
Because of the unique properties of glass, many RFID tags have about a 70% reduced read range when applied directly to glass. Some tags are designed to work when applied directly to glass and in testing we have found that their range is around 6' to 10'. Fortunately, many tags will read just fine when applied to plastic or cardboard and read through glass. A tag that is affixed to the dashboard or as a hang-tag on a mirror will read at nearly full range through glass.
Placement
The best placement of a tag for a vehicle would be as a hang-tag in the rearview mirror. This allows readers to interrogate tags from the left, right, or at an angle from straight ahead of a vehicle. Additionally, affixing a tag directly to the dashboard works well for readers that are mounted directly above the vehicle. Windshield tags are available but are not recommended when other solutions are available.
Pro-Tips
Expected RFID Read Ranges
4"x1" Gen2 RFID - 10' minimum, 20' maximum when affixed to the dashboard or used as a hanging tag from a rear-view mirror.
4"x1" Gen2 RFID - 4' minimum, 10' maximum when applied directly to the windshield.
Expected Costs of RFID Tag
Costs for a blank RFID tag for vehicles can range from $0.20 each to $0.30 each depending on the tag inlay and label material. Pre-programmed RFID tags range from $0.99 on quantity 1, to $0.59 for large quantities (5,000+).
What RFID tag sizes are there?
Sizes for hang-tags are typically custom. The RFID inlay is about 4"x1/2". These inlays can be built into any size label material on quantities of 10,000 or greater.
Tag Recommendations
The best tag to use for vehicle tagging is the NOX-1 4"x3/4" RFID tag. The NOX-1 includes a 4"x1" peel-off traveler label that can be placed on a document for record keeping.
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