The HID 1391 MicroProx Tag puts 125 kHz proximity technology into a small, coin sized, disk shaped transponder with an adhesive back. Stick it to any nonmetallic card or device and that item instantly becomes a proximity credential - no rebadging, no reissuing, no second card for users to carry.

It is the standard way to migrate a site off older credential technology. Adhere a Tag to an existing Wiegand, magnetic stripe, or barium ferrite card and the same badge now opens proximity readers, letting you cut over readers on your own schedule rather than replacing every credential first. It works the same way to add proximity to a plastic ID badge, a contact smart chip card, or a nonmetallic personal device.

The Tag can be programmed in any HID proximity format and is compatible with all HID proximity readers, storing up to 84 bits with over 1.9 x 10²⁵ unique codes. The outer shell is Lexan, it weighs just 0.04 oz, and the passive no battery design allows an infinite number of reads. Available in black or gray.

Features

Adhesive backed - attaches to any nonmetallic card or device to create a proximity credential.
Upgrade from Wiegand, magnetic stripe, or barium ferrite by adhering the Tag to existing access cards, without the expense of rebadging.
Turns a plastic ID badge or contact smart chip card into a proximity credential.
Adds proximity access to nonmetallic personal devices.
Programmable in any HID proximity format and compatible with all HID proximity readers.
125 kHz RF-programmable, encoded to customer specified numbers.
Data storage up to 84 bits, with over 1.9 x 10²⁵ unique codes.
Passive, no battery design allows an infinite number of reads.
Consistent read range, unaffected by body shielding or variable environmental conditions, even close to keys and coins.
Coin sized at 1.285 inches diameter and only 0.070 inches thick.
Durable Lexan outer shell.
Available in black or gray.

Specifications

General

Base Part Number: 1391
Description: RF-programmable, 125 kHz, customer specified numbers
Technology: HID Proximity 125 kHz
Data Storage: Up to 84 bits, over 1.9 x 10²⁵ codes
Diameter: 1.285 inches (3.264 cm)
Thickness: 0.070 inches (0.178 cm)
Outer Shell Material: Lexan
Weight: 0.04 oz (1.18 g)
Operating Temperature: -50 to 160 F (-45 to 70 C)
Attachment: Adhesive back, for nonmetallic surfaces
Power: Passive, no battery required
Color: Black or gray

Typical Maximum Read Range

ProxPoint Plus: Up to 2.0 inches (5.1 cm)
MiniProx: Up to 2.25 inches (5.7 cm)
Prox80: Up to 2.25 inches (5.7 cm)
ThinLine II: Up to 2.5 inches (6.4 cm)
ProxPro II: Up to 3.5 inches (8.9 cm)
ProxPro: Up to 4 inches (10.2 cm)
MaxiProx: Up to 4.5 inches (11.4 cm)
Note: Read ranges depend on local installation conditions

Compatibility and Warranty

Surface Requirement: Nonmetallic materials only
Compatibility Testing: Because of variations in cards and reading devices, HID does not claim the MicroProx Tag will work in every situation. Functional and non-functional Tags are available for compatibility testing against your existing credentials and readers, and compatibility should be confirmed before ordering
Placement: Actual placement on the host card or device depends on the application
Programming: Encoded to customer specified numbers, in any HID proximity format, using the HID ProxProgrammer
Warranty: Two years from date of shipment against defects in materials and workmanship, per the HID warranty policy

Frequently Asked Questions

What is the MicroProx Tag for?: Adding proximity access to something the user already carries. Stick it to an existing badge, a smart card, or a nonmetallic device, and that item reads on HID proximity readers - so you can move a site to proximity without rebadging everyone.
Will it work on my existing cards and readers?: Usually, but HID does not guarantee it. Cards and reading devices vary, so HID explicitly recommends confirming compatibility before ordering. Functional and non-functional Tags are available for testing against your actual credentials and readers - request those first if you are deploying at any scale.
Can I stick it to a metal card or device?: No. The Tag is specified for nonmetallic materials only. Metal detunes the antenna and the Tag will not read reliably.
Does it read as far as a proximity card?: No. Expect roughly 2 to 2.5 inches at a ProxPoint Plus, MiniProx, Prox80, or ThinLine II, and 3.5 to 4.5 inches at a ProxPro, ProxPro II, or MaxiProx. The small disk antenna gives shorter range than a full size card, and notably a MaxiProx reads a Tag at about 4.5 inches rather than the much longer range it gets from a card.
What format will it be programmed in?: Any HID proximity format you specify. Give us your format, facility code, and starting number - a Tag encoded to the wrong facility code will not open anything on your system.
Does it need a battery?: No. The design is passive, drawing power from the reader field, which allows an infinite number of reads with no maintenance.
How tough is it?: The outer shell is Lexan and the Tag is rated from -50 to 160 F (-45 to 70 C). At 0.04 oz and 0.070 inches thick it adds almost nothing to the card it is attached to.
What is the warranty?: Two years from date of shipment against defects in materials and workmanship. Note this is shorter than the lifetime warranty on HID proximity cards and fobs.
What colors are available?: Black or gray.

HID 1391 MicroProx Proximity Tag