Frequently Asked Questions


How many unique IDs can KCardsTM support?

At the moment, our flagship KCardTM solution can support up to 1000 unique IDs, calibrated using Apple iPads as the benchmark. Note that this number can vary depending on the build quality of your touchscreen device. Because of the sheer number of Android device brands, please check with us if you expect to deploy on a variety of target devices.

Is KCardTM compatible with my tablet? What are the compatible tablets?

KCardsTM are tested and compatible with tablet models listed below, please contact us if you would like to inquire about KCardTM compatibility on other tablets.

What about smart phones?

Apple iPhones only support five touch points and our KCardTM currently requires a minimum of ten simultaneous touch points to achieve optimal functionalities. For Apple iPhones, we have another product, the KTagTM. KTagTM is a smaller version of KCardTM that supports iPhones. It can support up to 30 different unique IDs.

Can the size of KCardTM be smaller?

KTagTM is a smaller version of KCardTM, refer to the table below for a comparison.

KCardTM KTagTM
Dimensions ISO-7801 ID-1 Standard (85.6mm x 53.98mm) 50mm x 50mm
Number of Unique IDs 1,000 30
Suitable Applications Membership Cards
Marketing Cards
VIP Access Cards
Gaming Cards
Base tag for physical objects, e.g. toys, coasters, figurines

What platforms can I use KCardTM on?

We have SDKs for iOS, Android, Windows and Unity, which means most platforms are supported. For more information on hardware quality, please refer to our compatible devices for reference.

How much do KCardsTM cost?

As with any OEM hardware solution, the larger the quantity ordered, the lower the price it will be. For a typical card gaming project where 10,000+ cards are needed, the cost per card (before printing) will be no more than US$1. Contact us for a more accurate quote.

Can I buy blank KCardsTM from you and I handle the printing?

Yes, but we strongly advise that you consult with us to learn more on the printing method that works best on our card materials.

Can you make KCardTM thinner?

Our manufacturing process is currently set at a thickness of 0.70mm. Please contact us if you would like to order thinner or thicker KCardsTM.

Do you have a paper version of KCard?

KCardsTM currently are made from durable plastic materials only for the best performance.

Will KCardTM still work if users update to newer Android / iOS / Windows versions?

Our KCardTM SDKs were written using the most fundamental function calls in these operating systems. We are fully confident that they will work with any newer OS versions.

I just tried your KCardsTM on my Android tablet and they could not be “read”. Why is that?

Certain Android tablets and smart phone models come with a palm rejection “feature” that interprets certain touch signal pattern as “palm”, and would refuse to react to protect the device from accidentally activated by a palm landing on the screen, even when this feature is “turned off” from the Settings menu. We are currently working on a solution and will add to our compatibility list as soon as possible.

How much information does each KCardTM store?

The short answer: unlimited. KCardTM is a unique ID. Once the app on your touchscreen device identifies it, it retrieves information from either within the App or via our Cloud Server. In other words, the KCardTM can be used to retrieve video, audio, graphics, text, which is just about anything. Losing a card does not lead to information leakage, for one just needs to void the record on the cloud server for the lost KCardTM ID, and then no one else would be able to retrieve any information. The KCardTM is a secured solution.

Does KCardTM need a battery or recharged?

KCardsTM do not require power to operate.

Why does KCardTM not work with my tablet with a screen protector?

Certain screen protectors, especially with thick ones, may block signals transmitted from KCardTM onto the screen. The same happens when one is trying to use a tablet with gloves on; the capacitive touch on your tablet will not function. We would recommend not using KCardsTM on tablets on screen protectors.

Your Web-based solution is sluggish/slow. Why is that?

Our Web-based solution first registers signals recorded in your tablet browser, and sends this information back to our API server for interpretation, after which the results are sent back to your tablet. This process could be affected by the Internet latency between your tablet location and our server, as well as the strength of your Internet connection. We recommend developing an App-based solution for situations where response time is of high importance.

My project needs more than 1000 unique IDs, what can you offer?

We can create more than 1000 unique IDs if we can restrict the brand and model of the smart devices you are deploying. Stay tuned and subscribe to our newsletter to get informed of our development.

How can I try your technology?

Send us a request for an Evaluation Kit here to try it out for yourself.