1) What RFID actually is (and how it works)

“RFID” stands for Radio Frequency Identification.

Yeah, it might sound complex at first, but the concept is much simpler than the name suggests!

This is how it works:

Inside every RFID card or wristband, there’s a tiny microchip connected to a thin antenna.

There’s no battery, no buttons, no interface: it’s an entirely passive system.

When you bring it close to a reader — usually within 1 to 4 centimeters — the reader emits a low-power electromagnetic field.

That field activates the chip, which immediately sends back its unique identification code.

At that point, the system checks whether that code is authorized.

If it is, access is granted. If not, nothing happens.

The entire exchange takes place in a fraction of a second, typically under 300 milliseconds, and does not require internet connectivity.

It’s a closed, local interaction, which is one of the reasons it is so reliable and trusted.

From a user perspective, all of this collapses into a single action: tap → enter 🙂

2. Is RFID safe?

How easy is it to hack?

Sometimes, while traveling, we will have to leave our valuable goods in our rooms or our lockers, such as our tech, our bags, backpacks, and more! So, it is only natural to wonder how safe RFID systems are!

Short answer after our research?

It greatly depends on the system, not the technology itself (same with real keys!).

There’s a huge difference between cheap RFID cards and secure ones, and most people don’t realize it.

Basic RFID cards (the kind that cost €0.50–€1 and are still widely used in older systems) can be copied in seconds with easily available tools.

It is possible to find devices online for under €100 that read and clone these cards almost instantly.

In real terms, if someone has physical access to your card for even a minute, it can be duplicated (so that is why it is important to keep them safe as if they were real keys!).

That might sound bad at first, but bear with me, it is only half the picture 🙂

In fact, modern systems use encrypted chips, in which communication between the card and the reader is protected.

In these setups, copying a card is not a quick DIY job anymore. It requires advanced equipment, technical knowledge, and, in most cases, becomes impractical and too expensive for real-world attacks.

Now compare that with traditional keys.

A physical key can be copied at a hardware store in 2–5 minutes, often without any verification, and once duplicated, you have zero control over where that copy ends up.

There’s no way to deactivate it, no way to track it, and no expiration.

RFID, when implemented properly, gives you way more control:

• Access can be revoked instantly

• permissions can be time-limited (e.g., check-in to check-out – this is possible because what is programmed is the reader and not the key itself!)

• Lost cards don’t permanently compromise the system (here again, it’s all about configuring the reader!)

So the answer to our question: I would say that, just like with most things when talking about safety, also RFID is not 100% perfect, but surely can be 100% safer than traditional keys (and added to their convenience, that is why they are becoming more and more adopted for accommodation and services around the world! 🙂

Brief Takeaway:
If it’s modern and encrypted, it’s often more controllable and, in practice, safer than keys for most travel scenarios.

3. Why RFID feels so convenient

while traveling?

The convenience of RFID is often misunderstood as “it’s faster than a key”.

Speed is surely part of it, but from my perspective, that is not the biggest advantage.

The real gain is consistency and standardization!

When you travel, every place tends to have its own access system. One apartment uses a key box with a code. Another requires an app. The gym might use a PIN. A coworking space might have reception hours.

Each of these systems forces you to pause, remember, interpret instructions, and adapt. Individually, it’s a small effort.

Repeated dozens of times over a trip, it becomes friction*!

*and if you’ve been reading this blog for a while, you know how badly I hate friction! xD Check out my list of top 15 suggested self-growth books, and you’ll see Atomic Habits right on top! eheh)

RFID removes that layer by standardizing the interaction.

Whether you’re entering a building in Lisbon, a gym in Berlin, or a locker in a shared space, the logic is identical. You bring the card close, and the system responds: easy, peasy, lemon, squeezy! 🤣

Think about it: over the course of a typical week-long trip, it’s not unrealistic to perform 100 or more access interactions. Even if each one only takes 10–15 seconds longer with traditional methods, that’s 15–25 minutes saved, but more importantly, it’s dozens of interruptions eliminated.

Personally, I definitely prefer storing one-two access keys in the cover of my phone and simply tapping. I might be mad, but I feel it is so satisfying! 🤣🤣

By using RFID keys, you simply stop thinking about access entirely, and that’s where the experience improves 🙂

4. Why Hosts around the world,

are moving away from traditional keys?

After understanding how this technology works, this became pretty obvious to me.

From the host’s perspective, the shift to digitalized RFID devices is even more logical!

Physical keys create ongoing problems: they need to be handed over with care, collected, duplicated, replaced if lost…

If you have ever rented a place, you probably know how bookings introduce the need for coordination: arrival times, delays, possible misunderstandings…

With RFID, access becomes easily programmable from a distance.

A guest can be given access that is valid only for specific dates and automatically expires at checkout. Cleaning personnel also get access to specific times.

There is no need for a physical exchange, no dependency on timing, and no risk of keys circulating beyond control. Furthermore, access might be registered too!

For someone managing even a small number of properties — say 20 to 30 bookings per year — this translates into hours of saved coordination, fewer operational issues, and a cleaner system overall 🙂

It also allows for true self-check-in, which has become increasingly expected in modern travel 🙂

Conclusion:

Why this Shift is happening now?