By application

Gym & Fitness Center Access Fobs

Security ID Systems supplies compatible member access fobs, key tags and cards for gyms and fitness centers — covering the 125 kHz proximity and 13.56 MHz formats most commonly deployed in commercial gym access systems, including EM4100 read-only key tags, 26-bit Wiegand prox fobs, and MIFARE member cards — in bulk quantities with fast reorder turnaround suited to the membership churn cycles of 24-hour and multi-site clubs. If your facility runs an access reader you haven't been able to source compatible credentials for, send us a format enquiry and we'll identify what you're running.

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All Major Gym Formats Covered

From legacy EM4100 key tags and 26-bit Wiegand prox fobs to MIFARE Classic and DESFire smart card credentials — we stock and supply the formats used across commercial gym access systems, including programmed batches for proprietary Wiegand facility codes.

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Bulk Supply With Fast Reorders

24-hour clubs and high-turnover fitness operators need steady credential supply, not one-off purchases. We maintain format profiles on file for repeat customers so reorders process quickly without re-specifying your chip type, facility code or card range.

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Custom Printed Member Credentials

Compatible key tags and member cards are available with custom printing — club branding, sequential numbering, member name fields and barcode overlays — ready to enrol on arrival at no change to your access system configuration.

Who This Service Is For

This page is for gym owners, 24-hour fitness operators, multi-site club groups and facility managers who issue member credentials — fobs, key tags, clamshell cards or wristbands — as part of their access system. Whether you're running a single-site boutique gym on a legacy prox reader or a franchise group with dozens of doors across multiple cities, the sourcing challenge is the same: reliable bulk supply of the right format at a cost that makes sense per member.

Branded member cards and fobs sold through your access system's manufacturer carry a significant premium over compatible alternatives, and they frequently require purchasing through a dealer channel. For operators who reissue credentials on a monthly basis due to member turnover, the per-unit cost compounds quickly. Compatible credentials sourced directly reduce that cost substantially while maintaining the same enrollment and read performance at your existing readers.

Member Credential Formats We Cover

The majority of commercial gym access systems rely on one of three underlying technologies. The most prevalent in older and mid-range installations is 125 kHz low-frequency proximity — specifically EM4100 read-only chips and 26-bit Wiegand-format credentials. Our 125 kHz LF proximity cards and fobs cover both of these, and the EM4100 vs EM4305 vs T5577 chip guide explains the differences between the read-only and writable variants if you're unsure which applies to your installation.

More recently deployed gym systems — particularly those that support mobile credential or multi-factor entry — often use 13.56 MHz high-frequency smart cards, with MIFARE Classic 1K and MIFARE Classic 4K being the predominant choices for general member access. These are issued as 13.56 MHz HF smart card credentials built on genuine NXP silicon, enrolled into your system's database the same way any issued member card would be. If your access platform has moved to MIFARE DESFire for its higher-security applications, we also supply compatible blank DESFire credentials — these are blank cards your own system enrols with its own application keys.

A smaller subset of gym operators runs proprietary reader formats from commercial access control vendors — Gallagher, ICT Protege, or Schlage — where a dedicated facility-code batch is needed. We supply Gallagher compatible proximity cards, ICT Protege compatible cards and Schlage Aptiq compatible cards in programmed batches to match your existing facility code and card number range.

Key Tags, Fobs and Cards in Bulk

Gym credentials need to be durable, compact and easy to carry. The most practical form factor for fitness club members is the key tag — a credit-card-thin or teardrop-shaped credential on a ring that attaches to a gym bag or keychain. We supply these in both 125 kHz prox and 13.56 MHz MIFARE variants, in quantities from small top-up batches through to full member-base volumes for multi-site rollouts.

For operators who prefer card-style credentials — used with lockers, check-in kiosks or secondary doors — we supply standard ISO CR80 cards in the same formats. Custom printing with your club logo, member name fields or sequential numbering is available; our bulk ordering guide covers what information to include with a quote request to ensure your print run arrives pre-numbered and ready to enrol. Wristband-style credentials for pool or spa access facilities are available on request, particularly in 13.56 MHz MIFARE formats suited to moisture-exposed environments.

If you manage multiple sites running the same access platform but potentially different reader vintages, our blank programmable credential range allows a single stock to be programmed to whichever facility code or sector key each site requires — reducing the number of separate SKUs you need to maintain across your operation.

Fast Reorders for Member Churn

24-hour gym models and high-volume fitness clubs see consistent credential turnover: members join, cancel, lose their fob and request a replacement. At facilities with hundreds or thousands of active members, this generates a steady background demand for fresh credentials that needs to be met quickly and without minimum order quantities that force you to overbuy for a single replacement run.

We maintain format profiles on file for repeat customers, meaning reorder batches do not require you to re-specify your facility code, card range or chip variant each time. For operators who have confirmed their format and placed an initial batch, subsequent reorders can be processed against the stored specification. This is particularly useful for franchise groups or management companies running the same access system across multiple locations — one format profile serves all sites in the same deployment.

Lead times vary by format and quantity; standard 125 kHz prox key tags and EM4100 fobs typically ship faster than programmed smart card batches requiring specific sector configuration. Contact us to discuss your expected monthly volume and we can advise on stocking arrangements that keep you from running short between orders. You can also review our apartment building access credential service or office building access card supply if your organization manages mixed-use properties alongside fitness facilities.

Request a Quote

To receive a quote for compatible gym access fobs or member credentials, provide the following: your access control system manufacturer and model (or the reader brand visible on the entry door), a sample credential if available, your preferred form factor (key tag, card or fob), approximate quantity and whether you need custom printing. If you are unsure of your format, our card format identification guide walks through the most reliable ways to confirm what technology your readers are using before you order.

We work with independent gym operators, franchise groups and property managers who include fitness facilities in a larger access system deployment. Compatible fobs and key tags are also available through our broader gated community and HOA fob replacement service for residential developments that include on-site fitness amenities. Send us your format details and we'll confirm compatibility and provide lead time and per-unit pricing for your required volume.

Security ID Systems is an independent manufacturer and supplier of compatible access-control credentials and is not affiliated with, authorized by, or endorsed by EM Microelectronic, NXP Semiconductors, Gallagher Group, ICT (Integrated Control Technology), or Schlage.

Common gym access credential formats — technology, frequency, typical deployment and available form factors

Credential TypeFrequencyChip / StandardTypical Gym DeploymentAvailable Form Factors
EM4100 read-only prox125 kHzEM4100 (read-only)Legacy single-door gym entry, locker roomsKey tag, clamshell fob, disc
26-bit Wiegand prox125 kHzEM4100 or HID-formatMulti-reader sites, Wiegand controller panelsKey tag, card, clamshell fob
MIFARE Classic 1K13.56 MHzGenuine NXP MIFARE Classic 1KManaged gym systems, check-in kiosks, locker integrationKey tag, ISO card, wristband
MIFARE Classic 4K13.56 MHzGenuine NXP MIFARE Classic 4KHigh-capacity member databases, multi-application sitesISO card, key tag
MIFARE DESFire EV2/EV3 blank13.56 MHzGenuine NXP DESFire EV2 / EV3Higher-security systems enrolling their own application keysISO card
T5577 writable 125 kHz125 kHzT5577 (writable)Replacement top-ups for sites needing format-matched reissueKey tag, disc fob

All referenced brands and all other brand and product names are trademarks of their respective owners. Security ID Systems is an independent manufacturer and supplier of compatible access-control credentials and is not affiliated with, authorized by, sponsored by, or endorsed by these companies. Brand and format names are used only to identify the systems our products are compatible with. MIFARE and DESFire are registered trademarks of NXP B.V.

Compatible formats we cover for this

13.56 MHz Rare format

CISA CT6 (Mifare Classic 1K, AERO/SMART)

Compatible with CISA

Chip
Genuine NXP MIFARE Classic 1K
Format
Mifare Classic 1K sector-key based
View compatible credential
13.56 MHz Rare format

CISA CT6 (AERO / SMART, Mifare Classic 1K)

Compatible with CISA

Chip
Genuine NXP MIFARE Classic 1K
Format
MIFARE Classic 1K sector-key based; CISA bra…
View compatible credential
LF+HF Rare format

Gallagher / Cardax (LF Cardax IV + HF MIFARE/DESFire)

Compatible with Gallagher Security

Chip
T5577 / EM4305
Format
Credential tuple: 4-bit region code (A-P) + …
View compatible credential
13.56 MHz Rare format

Ving Plus 2K (Mifare Plus EV2)

Compatible with ASSA ABLOY Global Solutions

Chip
Genuine NXP MIFARE Plus
Format
Ving Plus secure AES encoding on Mifare Plus…
View compatible credential
13.56 MHz Rare format

Ving Plus 2K / 4K (Mifare Plus EV2)

Compatible with ASSA ABLOY Global Solutions

Chip
Genuine NXP MIFARE Plus
Format
Ving Plus secure encoding on Mifare Plus EV2…
View compatible credential
13.56 MHz Rare format

Ving Plus 4K (Mifare Plus EV2)

Compatible with ASSA ABLOY Global Solutions

Chip
Genuine NXP MIFARE Plus
Format
Ving Plus secure AES encoding on Mifare Plus…
View compatible credential
13.56 MHz Rare format

Hotek HTK Mini Advance (Mifare 1K)

Compatible with Hotek Hospitality Group

Chip
Genuine NXP MIFARE Classic 1K
Format
Hotek Mini Advance encoding on Mifare 1K
View compatible credential
125 kHz Rare format

MIWA PR Series (EM4100 hotel lock)

Compatible with MIWA Lock Co.

Chip
T5577 / EM4305 / EM4100 / 4200
Format
EM4100 40-bit read-only ID (PR Series hotel …
View compatible credential
13.56 MHz Rare format

Makfa 1K (Mifare 1K)

Compatible with Makfa

Chip
Genuine NXP MIFARE Classic 1K
Format
Makfa lock encoding on Mifare 1K
View compatible credential
Browse all compatible formats

Gym & Fitness Center Access Fobs — common questions

Can you supply compatible gym access fobs?

Yes — we supply compatible member access fobs and key tags for gym and fitness center access systems in both 125 kHz proximity and 13.56 MHz MIFARE formats. To confirm the right product, tell us your access control system brand and model, or send a sample credential, and we will match the format and supply in your required quantity.

What format do most gym key tags use?

Most commercial gym access systems use either EM4100/26-bit 125 kHz proximity key tags or MIFARE Classic 1K smart card key tags at 13.56 MHz. Older single-door installations typically run EM4100 read-only prox; newer managed systems with check-in kiosks or locker integration more commonly use MIFARE. The reader manufacturer and model on your entry door is the most reliable way to confirm which technology applies.

Can we order member fobs in bulk?

Yes — bulk orders are the primary use case we serve for gym operators. We supply compatible key tags, fobs and member cards in quantities scaled to your member base, from small top-up batches through to full-facility rollouts. Repeat customers have their format profiles stored on file for fast reorders without re-specifying the credential details each time.

Can you print our gym logo on member cards or key tags?

Custom printing — including club logos, member name fields, sequential card numbers and barcode overlays — is available on ISO card formats and some key tag varieties. Provide your artwork file and any required numbering sequence with your order enquiry. Our bulk ordering guide outlines the file specifications and what to include with a custom print request.

Will compatible fobs work on our existing readers without any changes?

Compatible credentials are designed to present the same data protocol as the credentials your readers already accept, so no reader reconfiguration or firmware changes are required. The enrollment process is identical to issuing any other member credential in your access management software. If you are uncertain whether your installation uses a proprietary format that requires a programmed batch, we can advise after reviewing your reader model.

Request a quote

Tell us what you need and we'll quote it

Send the format, quantity and your existing system (or a photo of a card and reader). We confirm compatibility before production and ship worldwide — including the rare formats no one else lists.