Who is Wiliot?
We are a semiconductor and service company that designs and markets a wireless computing and sensing solution. This solution comprises integrated silicon and cloud computing technologies enabling battery-free operations at a fraction of the cost. Our vision is to securely connect the physical and the digital world, using wireless RF technologies.
Does Wiliot sell tags?
No, but our partners do. We own the design and sell the silicon chips that can be embedded in tag inlays. We do not manufacture or commercialize inlays or tags. We partner with world class inlay assemblers and converters who sell them. To expedite time to market and streamline the production of tags we provide tools, reference design and code to those partners
Can I get samples?
Wiliot is sampling customers via a controlled release process called the Early Advantage Program (EAP). Engineering samples will only be available to members of the Early Advantage Program in 2019. Production devices are going to be exclusively allocated to members of the EAP for the first half of 2020. Wiliot plans to release the chip to the mass market in late 2020. Please send an email to email@example.com for more information about joining the EAP program
What does the chip do?
The chip consists of 5 main components: an energy harvester that capture ambient RF energy, an integrated sensing unit, a security unit, a processing unit and a Bluetooth transmitter.
What services are you running on the cloud?
Wiliot cloud is a key element of the Wiliot solution. It provides limited yet essential services that are critical for scalability: security (privacy, confidentiality, and authentication), sensing (calibration, data processing, digital smart sensing) and product lifecycle management.
Can I use Wiliot tags without the cloud service?
Wiliot offers a solution comprising of two essential components: chip and cloud. These are tightly integrated by design and for reasons of security and functionality cannot be used independently. Physical tags with Wiliot chips send encrypted and authenticated packets over the air while the cloud provides decryption, authentication and smart sensor processing. Tag data can be accessed from the Wiliot cloud through a RESTful interface. The cloud ensures data remains secure, private and authentic, and generates actionable information about: temperature. Movement and pressure/weight.
Can I register to receive a notification on the availability of samples or GA?
Currently, we are sampling customers through participation in the Early Advantage Program. We are planning to release the product to the mass market in late 2020. To be the first to receive product information and Wiliot tag availability notifications, be sure to fill the contact form on our website (www.wiliot.com) and subscribe to Wiliot news.
What type of beacon protocols do you support?
We support the Wiliot Ephemeral ID format (WEID), a power efficient format designed by Wiliot to securely send private and encrypted ID, in addition to sensor data. This format uses the same Bluetooth Low Energy non-connectable non-scannable undirected advertising packets that are part of the Bluetooth 4.x and 5.x standard, as used by other Bluetooth beacons.
How do I access the tag data?
The digital identity and digital activity of physical products can be accessed through a RESTful API interface to the Wiliot cloud.
What sensors do you have on chip?
The chip has a built-in temperature and a movement sensor. The chip has a built-in ADC (Analog to Digital Converter) to connect with passive sensors via the analog I/O that provides a digital read-out unit. It can, for instance, be connected to a force sensing resistor material (for weight sensing). The chip has a detector on the digital I/O that can detect a change of state on a mechanical trigger. It can be built into a sticker that is torn when opening an envelope to detect such an event. The raw data measured by the physical sensors is then combined with cloud-based machine learning algorithm, which translate these raw values onto the corresponding physical domains (e.g. pick-up/movement) through algorithm that are self-learning and improving over time.
Is there a CPU in your chip?
Yes, Wiliot chip integrates an ARM Cortex M0+ CPU.
Do you support security?
Yes, every Bluetooth Advertising packet we send out is encrypted with a 128-bit AES-based scheme that allows anonymity, confidentiality, and authentication. We have two layers of encryption to enable safe transit of packets on an infrastructure while maintaining the privacy of the application data.
What external components do you need for the tags to work?
None, it’s just a chip and the antenna. Some application may require external sensing material (e.g. a force sensing material) to implement certain functionality.
What is the size of the tag?
Size of the tag depends mostly on the antenna size, and is function of the environment, the application, and the manufacturing requirements we don’t directly control. It can be as small as a US postage stamp (<5 cm2)
What sources of energy do you use?
We use the ambient energy that propagates in space through Radio Frequency waves. Specifically, we harvest cellular, Bluetooth, Wi-Fi and other 2.4 GHz connectivity technologies (e.g. Zigbee, Thread, etc). The specific bands supported are a function of the design of the harvesting antennae. The Wiliot chip supports harvesting from up to 3 different bands simultaneously.
What is the range?
Range can vary depending on the radio environment and material upon which the tag is mounted. In most cases, it will be between 1 and 3 meters. In some cases, assuming a balanced energy source and good radio conditions, tags may be visible up to 6-8 meters.
How frequently can you transmit a beacon?
Beacons are transmitted when there's enough energy collected. This is a function of the energy source pattern (transmission output power, duty cycle, active time) as well as the distance from it and the radio environment. We can send beacons as fast as few seconds in a couple of meter range from the tag, under a balanced source of energy.
What is the lifetime of the tag?
The lifetime of the tag is driven by material and manufacturing process of the tag assembly more than by the life expectancy of the chip. We suggest discussing details with inlay assembly house as this can vary depending on the requirements and price may be affected consequently. The industry today can provide options for the tag lifetime that can go anywhere from 6 months to 10 years.
What is the behavior of the tags on surfaces like metal, or liquid containers?
As with RFID, different inlay, antenna designs and special gap fillers may be required to support on-metal/skin/liquid/glass applications. Metal and liquids are the most challenging material that affect RF environments in both the harvesting and transmission path. Issues are comparable between Bluetooth tags and RFID tags.