Keyless entry has moved from a luxury extra to something guests expect in many hotels: the room key lives on the guest's phone instead of a plastic card. This guide explains the main types of hotel door locks, what keyless systems change for guests and teams, and where chatlyn fits in. The short version: the key comes from the hotel's lock system, and chatlyn handles the guest messaging around arrival, such as the WhatsApp message that tells guests what to expect before they reach the door.
Types of Hotel Door Locks
Traditional Keys
Traditional keys have been used in hotels for centuries. They are simple and easy to use, but guests lose or misplace them, a lost key means a replacement lock or cylinder, and metal keys can be copied. For most hotels that adds up to cost and a security risk.
Magnetic Stripe Cards
Magnetic stripe cards replaced metal keys in many hotels because they can be programmed and reprogrammed for each guest. They are cheap, but they demagnetise easily, for example next to a phone, and guests often come back to the reception with a card that no longer opens the door.
RFID Cards and Fobs
RFID cards and fobs use radio frequency identification to unlock doors. They last longer than magnetic stripe cards and are harder to copy, but they are still physical objects: guests lose them, leave them in the room or take them home.
Why Do You Need to Be Keyless? Benefits
Enhanced Security
A mobile key is issued for one guest, one room and one stay. It can be switched off the moment the guest checks out or a phone goes missing, and most keyless systems log every opening, so the hotel can see which key opened which door and when.
Convenience for Guests
With a mobile key, guests carry one thing they never leave behind: their phone. Depending on the system, the key sits in an app, in the phone's wallet or behind a secure link, and guests who arrive late or skip the queue at the desk can go straight to their room. The same key usually works for the whole stay, including shared doors such as the spa or the car park.
Operational Efficiency for Hotels
Fewer cards to encode, replace and collect means fewer small tasks at the front desk. The time saved goes back to the guests standing in front of the team. Most keyless systems connect to the property management system, so keys follow the reservation instead of being created by hand.
Where Guest Messaging Fits
A keyless room only feels effortless if guests know what to do before they arrive: when the room is ready, how the key reaches them, where to park and what to do if something does not work. That is a messaging job, and it is where chatlyn comes in. chatlyn does not issue or manage keys; the lock system does that. chatlyn sends and answers the messages around the stay.
Real-Time Communication
Most guests already use WhatsApp every day, so it is a natural place to reach them before arrival. With chatlyn, a hotel can send a WhatsApp message a few days before arrival with the practical details: arrival time, parking, directions and, where the PMS provides one, the hotel's own check-in link. Guests reply in the same chat if they have a question, and when they want to book something, they get a link to the hotel's own booking engine.
Automated Responses
Arrival day brings the same questions again and again: "What time can I check in?", "Where do I park?", "Is breakfast included?". chatlyn's AI answers routine questions like these on WhatsApp, webchat, Facebook Messenger and Instagram from the information the hotel gives it, and hands anything it cannot answer to the team. When the team corrects a weak answer in the review queue, the AI learns from it.
Personalised Promotions
The pre-arrival message is also a good moment for an offer that fits the stay. With chatlyn, a hotel can send an approved WhatsApp template to guests arriving in the next few days, for example a spa treatment or a dinner table for the first evening. Guests answer in the same chat, and the team confirms the request. More ideas on timing and wording are in our guide to upselling in hotels.
Integration with Hotel Management Systems
chatlyn connects to the hotel's property management system, so messages can go out on their own around reservation events, such as a new booking, a guest's check-in or check-out. Every conversation sits in one guest messaging inbox, linked to the guest's profile, so the team can see what was already said before they reply.
How Mobile Keys Work
Keyless Access
Keyless systems come from lock and access specialists. Salto, for example, makes electronic locks and access control for hotels, and FLEXIPASS is one of the providers that deliver mobile keys to guests' phones. The basic flow is similar across vendors: the reservation reaches the lock system, the system creates a key for the room and the dates of the stay, and the guest receives it on their phone, usually after completing online check-in.
Security and Ease of Use
Good keyless systems are easy for guests and strict in the background: keys are encrypted, valid only for the booked room and dates, and can be withdrawn at any time. When choosing a system, check which locks it supports, whether guests need to install an app, how it connects to your PMS and what happens when a phone battery runs out. A physical card at the desk remains a sensible backup.
Environmental Benefits
Every mobile key is one plastic card that does not need to be produced, encoded and thrown away. For hotels that report on sustainability, fewer key cards is a small but visible step, and many guests notice it.
Benefits for Hotels
Operational Efficiency
Mobile keys take card handling off the desk, and automated messages take routine questions off the phone. Together they give the team more time for what guests remember: a personal welcome and service that makes them want to come back.
When arrival information goes out on its own and routine questions are answered in the chat, the team does not have to repeat the same explanation at check-in. They can spend that time on requests that need a person, such as a room change, a celebration or a late arrival.
Improvement of Customer Satisfaction
Guests notice when arrival is easy: they know where to go, the door opens and their questions get a quick answer. A smooth start to the stay shapes how they feel about the rest of it.
When guests feel informed and looked after, they are more likely to leave a good review, return and recommend the hotel to friends and family.
Increased Revenue
A pre-arrival message that guests actually read is a good place for a relevant offer, and that helps to increase hotel revenue from services such as the spa, the restaurant or a late check-out.
The offer works best when it matches the stay: a spa treatment for a wellness weekend, a table for two for an anniversary, parking for guests arriving by car. Guests reply in the chat, and the team confirms what was requested.
Guest Loyalty
Loyalty comes from feeling recognised. chatlyn keeps a profile for every guest with their conversations and stays, so the team can see that a guest asked for a quiet room last time and plan for it. Personal welcome messages on WhatsApp and a thank-you after the stay keep the relationship going between visits.
Improvement of Online Reputation
Online reviews strongly influence a hotel's reputation. A smooth arrival, with clear information before the stay and a door that simply opens, gives guests one less thing to complain about. After check-out, chatlyn can send a WhatsApp message that thanks the guest and asks for feedback, with a link to the review platform the hotel prefers.
Continuous Innovation
Integration with Other Systems
Keyless entry works best as part of a connected setup. chatlyn connects with the hotel's property management system (PMS), links guests to the hotel's own booking engine and keeps every guest profile itself, so there is no need for a separate customer relationship management (CRM) system for guest communication. The lock system stays the hotel's own choice.
Adaptability and Scalability
Whether it is a small boutique hotel or a large resort, the approach is the same: start with the messages that matter most, such as the pre-arrival message and answers to routine questions, and add more as the team gets used to them.
Training and Support
New technology only helps if the team is comfortable with it. chatlyn's onboarding team sets up the platform with the hotel, from the first messages and AI knowledge to the go-live, and trains the staff who will use it every day.
Conclusion
Keyless entry gives guests a faster, more secure way into their room and takes card handling off the front desk. The key itself comes from the hotel's lock system, from vendors such as Salto or FLEXIPASS. What makes the arrival feel effortless is the communication around it: clear WhatsApp messages before arrival, quick answers to routine questions and a team that has time for the guests in front of them. That part is where chatlyn helps.
