Hotel key cards: materials, technology and how to choose

A key card is the first physical object a guest holds at check in. It also has to work on every door, on every floor, for the whole length of a stay. Those two jobs pull in different directions, and most ordering mistakes come from deciding one without checking the other.

This guide covers the three things that decide which card a property should order: the material, the chip and its compatibility with the lock system, and the finish.

The order of those three matters. Material is the decision everybody enjoys making and it is the one that can be changed late. Compatibility is the decision nobody enjoys making and it is the one that cannot be changed at all once cards are printed. A property that settles the chip first and then chooses the body has an easy project. A property that does it the other way round sometimes has a warehouse full of beautiful cards that do not open doors.

01. How hotel key cards got here

Key cards have been through three phases, each shaped by what properties needed at the time.

1. Magnetic stripe

Introduced in the 1970s, the magstripe replaced metal keys and let the front desk reprogram access without changing hardware. It dominated for decades and is still in service in many properties.

2. RFID

The guest holds the card near the reader instead of swiping it. RFID cards are more durable, cannot be demagnetised, and support zone access, time windows and audit trails.

3. Material choice

The technology inside is now settled. What changed is what the card is made of. Wood and recycled plastics are both in normal production, and property groups increasingly choose the body material against their environmental commitments rather than only against cost.

A fourth phase is under way and is not yet a material question at all: the migration to properly encrypted credentials. A great many estates still run chips whose cryptography has been broken for years, and the industry is moving to AES based credentials in response. That is a chip and firmware project rather than a card body one, and it is covered in the guide to AES on Visionline estates.

The card is a brand object before it is a tool

Material, weight and finish say something at check in before anyone reads the print on it. That is why the material decision is worth as much attention as the chip.

02. The card body: PVC, recycled PVC and wood

The material decides the cost, the environmental profile and what can be done to the surface. It does not decide whether the card works, which is the chip's job.

PVC

The industry standard, from 0.40 to 1.0 mm. Offset and silkscreen printed, laminated, gloss or matt. Takes a magnetic stripe, a contact chip, a signature panel and security features. See PVC and recycled PVC cards. The standard thickness for a hotel card is 0.76 mm, which is what every encoder and card holder is built around; the guide to thickness and lamination covers when to depart from it and what that costs.

Recycled PVC

The same dimensions and the same production route as standard PVC, so nothing changes in issuance or encoding. It is the step that adds an environmental credential without changing a single operational habit. What it does and does not let a property claim in a tender is set out in the recycled PVC guide.

Wood and bamboo

Basswood, cherry, black walnut and bamboo, at 1.20 to 1.30 mm. Laser engraved, offset printed and encoded. Kaway holds FSC certificate FSC-C195226. What a wooden card changes, and what it does not, is covered in its own guide.

PET

Less common in hotels and worth knowing about, because it is specified for a physical reason rather than an environmental one: it handles heat and chemical exposure considerably better than PVC. Where cards live in vehicles, near plant or in a spa environment, PET is the body that does not warp.

What each body can carry

The three bodies do the same things. They are all CR80, they all take RFID and NFC, they all take a magnetic stripe and full colour print. Laser engraving and the natural grain are the only two that separate them, and both belong to wood and bamboo.

Minimum order is 500 units. If you are not sure how that applies to what you need, ask before you specify, or read what a minimum order is actually for.

03. Chips, frequencies and lock compatibility

The wrong chip or the wrong frequency produces cards that do not open doors. It is the single most expensive ordering mistake, and it is entirely preventable. What actually decides compatibility is covered in full in its own guide.

125 kHz, low frequency

Older technology, still widely installed. Chips include EM4200 and T5577. Common in legacy systems.

13.56 MHz, high frequency

The current standard, and what NFC means in practice. Chips include MIFARE Classic, DESFire EV1, EV2 and EV3, NTAG and ICODE. Supports encryption and stronger authentication, and which of those chips to specify depends on what a copied card would cost you.

UHF, 860 to 960 MHz

Longer read range. Used where a credential has to be read at distance rather than on contact.

Estates running two generations at once

Very few properties replace every reader in one weekend. Where a refurbishment has left two reader generations on the same site, a dual frequency card carries both credentials in one body so staff and guests hold one card instead of two. How that works, and what it does not solve, is covered separately.

Systems our cards are compatible with

Assa Abloy VingCard, including Visionline and Saflok. Dormakaba. Onity. Salto. Häfele Dialock. See RFID and NFC cards for the chips we work with routinely.

Confirm compatibility in writing before production, not after delivery

Send the lock or reader model you already run. We confirm the chip against it in writing before anything goes into production. A general claim that a supplier works with a lock brand is not the same as a confirmation that names your model.

Can one card carry both a magnetic stripe and a chip

Yes. Combination cards are common in properties moving between systems, where some doors still read the stripe and others read the chip. They are available across the card bodies above.

Who writes the data

A separate decision from which chip. Cards can ship blank for the property to encode at issuance, pre encoded at the factory with a UID list, or somewhere between. For a guest room system the first is almost always right, because it keeps the keys inside the property. The encoding guide sets out all three routes.

04. Print, engraving and finishes

Every card is produced to order, so the branding and the specification are built in from the start rather than applied to stock. The full range sits on the capabilities page.

1. Full colour print, both sides

Offset and silkscreen on PVC, recycled PVC and wood. Pantone matching, gradients and photography, laminated against wear.

2. Laser engraving

On wood and bamboo. A permanent, tactile finish that can be combined with print on the same card.

3. Surface finishes

Gloss, matt and soft touch on PVC and recycled PVC. Natural grain on wood, which varies between species and is part of the point.

4. Security and detail features

UV printing, microtext, guilloche, hologram and hot stamping. Spot UV puts a gloss highlight on specific areas of a matt card, and embossing raises a texture. Which of those are worth paying for depends entirely on whether anybody at the property will actually check them, and the guide to security features is blunt about which ones earn their cost.

5. Personalisation and encoding

Variable data, photo ID, sequential numbering, barcodes and QR, chip encoding with a UID list, magnetic stripe encoding, signature and scratch panels. How to specify a numbering range properly is worth five minutes before the first order, because it is the part of a card that a reprint cannot fix cheaply.

05. Matching the card to the property

There is no single right answer. The card follows the property tier, the lock system, the environmental commitments and the volume.

Five star and boutique

Wood or bamboo. The material is felt at check in, the grain makes each card slightly different, and it reads as a considered material choice.

Four star and full service

Wood or recycled PVC. Wood if the environmental commitment is public and needs a visible object behind it. Recycled PVC if the priority is a credible step that changes nothing operationally.

Three star and branded chains

PVC or recycled PVC. Standard PVC at volume, or recycled PVC for the same operational behaviour with a better environmental profile.

High volume and extended stay

PVC. Durability per unit matters most where cards stay in circulation longer and get reissued often.

Staff, housekeeping and back of house

Often the wrong object entirely. A credential carried on a belt all day and dropped on hard floors lasts far longer as a moulded key fob than as a card, and a spa or pool area is usually better served by a wristband. All three carry the same chip, so a property can mix bodies without touching the access system.

06. What to ask before you order

Four questions that separate a supplier who has thought about your property from one who has not.

1. Will you confirm compatibility in writing, naming my lock model?

Ask for confirmation that names the brand and the model number you run, issued before production rather than after delivery. A general statement about a lock brand is not an answer.

2. How do you keep the chip and the configuration consistent between batches?

Repeatability is what stops a second order behaving differently from the first. Ask what the change control procedure is, and who controls chip sourcing and encoding. Ours happens on one floor, which is the short version of the answer, and the reordering guide is the long one.

3. Can I test a sample against my own doors first?

A sample encoded for your actual system, tested on real doors across more than one zone, catches problems that an encoding station never will.

4. How should an FSC claim be checked?

FSC claims are specific to products and orders. Kaway holds FSC certificate FSC-C195226. Any certificate number can be checked at search.fsc.org, and it is worth checking what the scope actually says rather than accepting the logo. Lead times, minimum quantities and the rest of the commercial detail sit on the FAQ.

We manufacture for the trade and do not sell to your customers, so a distributor or an integrator can put this guide in front of a property under their own brand. Minimum order is 500 units, standard production is 13 calendar days, 8 calendar days on express and 12 calendar days for wooden cards, and quotes come back the same working day.

07. Technical references

• The NFC Forum, the body that defines the NFC specifications the phone in a guest's pocket implements: nfc-forum.org.

08. Frequently asked questions

Will a new card work with our existing locks?

It will when the chip is specified against the lock model you run, and confirmed in writing before production. The body material has nothing to do with it.

How long does a hotel key card last?

A well laminated PVC card survives ordinary guest use for years. What ends its life is usually loss rather than failure, which is why a recovery box at the desk saves more money than any change of material.

Can we keep our existing artwork and change only the material?

Yes, with a proof, because the same artwork reads differently on grain than on white PVC. Pale inks and large flat colour areas in particular behave differently on wood.

Do we need different cards for guests and for staff?

Not necessarily different credentials, but often different bodies. The same chip in a fob or a wristband survives daily staff use far better than a card does.

What is the minimum order, and why is there one?

500 units. Below that the setup for printing, lamination and die cutting costs more than the cards do, which is a fact of the process rather than a commercial policy.

How far ahead should we order a reprint?

Standard production is 13 calendar days, 8 calendar days on express and 12 calendar days for wooden cards, plus freight. Ordering when stock is low rather than when it is out is the difference between a standard run and an expensive one.