Build a Simple, Secure Guest Registration System with Gravio

The problem this system solves: Digital and efficient guest registration without internet or corporate network involvement.

If you don’t want your guest information data to be transmitted on your corporate network or on the internet, this Edge Computing based solution is for you. Your guests’ data is printed on a piece of paper and the data not stored anywhere apart from on the paper it prints. The system also does not touch the Internet nor any other corporate network infrastructure. The system is completely independent.

A Simple Set That Includes Everything You Need

While this system is highly modular, the standard setup consists of the thermal receipt printer, an indicator light, a mini computer and an iPad. The mini computer creates a secure local wifi network to which the iPad and printer are connected. Just plug it in and play.

Get started

Most systems rely on the cloud. But our system is Edge based and therefore requires no network or internet connectivity. Great for ease of deployment. Great for security.

Independent of Corporate Network and Internet

Not needed to be connected to any corporate, public or mobile network. This Gravio based system works completely independently.

No Data Stored Other Than on Signed Receipt Paper

No data is stored anywhere. The data is directly sent to the printer and then discarded immediately thereafter.

Quick Deployment

Since this system doesn’t need corporate network or interent connectivity, it is quick and easy to deploy and maintain.

Flexible Design

Need a different branding? Different questions? Different fields? Our Gravio based system is very easy to adapt.

Available Sensors and APIs

These are the sensors and APIs you can use. Now the creativity is yours.

Temperature Sensors

Detect the temperature in a room, for example to switch on or off the air conditioning.

Humidity Sensors

Detect humidity in rooms and trigger ventilation accordingly.

Magnet Sensors

Detect if doors or windows are open or closed.

Motion Sensors

Detect if there is a moving person in a room or not.


Make your room interactive by connecting it to buttons, for example to book the room.

Vibration Sensors

Detect if something has been moving, stopped moving or was falling on the floor.

Double Buttons

Add interactivity to your room with two buttons, for example one for on, one for off.

CO2 Sensors

Detect the levels of CO2 in a room and trigger actions depending on the levels.

Gravio Light

Use a colorful indicator light signalise any condition. The light can change to any color. Used in this project.

See how it works

Our mission is to simplify every company’s processes and enable them to benefit from the latest technologies.

What others say

What people say about the Gravio system, upon which this system is built.

Gravio is the best solution to deploy IoT solutions with the ThinkCentre Tiny, ultra-small desktop computer. This combination could enable edge-based IoT services with a small start and easy-to-use friendly GUI.

Ryota Motojima, Product Manager, Lenovo Japan

Gravio and its sensors are a very good product to get started with IoT. It is easy to make use of sensor data such as temperature and occupancy or integrate with the cloud and AI.

Norimitsu Katsuragi, Nisseicom Ltd.

I was pleasantly surprised by how reliably Gravio can publish our waiting list queue length to our website. We will definitely continue using it even after Covid-19 has converged.

Yusuke Yamamoto, Director of Toyosu Yamamoto Ophthalmology

As Seen On

Where Gravio, the IoT system upon which this system is built has been featured.

Based on Gravio, the IoT Edge Platform