
QREX SMART T-SHIRT
The QREX smart T-shirt, based on the unique concept of Becktag Madrid™, stands out not only for its stylish appearance but also for its intelligent functions. Smart solutions can be activated from up to 200 meters away – so technology truly moves with you.
When ordering the product, please specify the desired function in advance – this is necessary due to the manufacturing process. You can quickly and easily provide the data by filling out the function request form at the bottom of the page.
Download our app and activate your Becktag smart clothes and functions within the app!

Product Information:
- Oversized: We designed the T-shirt to align with current trends, ensuring a comfortable fit.
- Premium material composition: Made from 100% cotton with a high g/m² (grams per square meter) count, making it wearable in winter, yet not too thick for summer or your holidays.
- Special CHIP on the sleeve: The unique and never-before-seen concept of Becktag Madrid™ has been realized. See its functions below.
- Custom sewn elements, quality solutions: Becktag™ believes in uniqueness, which is why we designed a T-shirt that stands out from simpler T-shirts in appearance. You'll also find the Spanish flag on our T-shirt.
- Packaging: Resealable, reusable, high-quality pouch.
Do you have further questions?
In case of return, please read our "Shipping Information" menu point in advance and contact us!
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NFC function: Becktag products require NFC technology, which is available in most modern smartphones. It may be necessary to manually activate it on some devices.
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Touch zones: Since the location of the NFC sensor can vary by manufacturer, it is advisable to try multiple touch points for a secure connection – this is a completely normal phenomenon, especially with Android devices.
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Using a phone case: Some protective cases may affect the strength of the NFC connection. If the connection is not established initially, it is worth trying again, possibly without the case.
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Compatibility: Becktag products have been extensively tested with all NFC-compatible iOS devices and the most popular Android devices – the technology works stably with these. Although devices can be diverse, based on our experience, most devices handle the connection well.
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User experience: We offer the smart functions in an optimized form on iPhone devices, thus providing a somewhat more refined user experience. Naturally, all basic functions are also available and can be used without problems on Android.
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Becktag Madrid application: The NFC functions of clothing items can be programmed for both iPhone and Android devices through the Becktag Madrid application, which is available for free in the App Store and Google Play Store.
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Data management: Data provided when using the functions will only be used to the extent necessary for the operation of the services – by using the application, you agree to this.




