**2. Safe and accuracy certificates of UWB in team sports**

International Federation of Amateur Football (FIFA) organized an event in which EPTS of those manufacturers that wish an official assessment of its devices´ security may be evaluated under standards and common conditions. All of these providers´ devices evaluated positively are certified with International Match Standard (IMS) license and published in the FIFA's website [15]. In addition, FIFA offer a second certificate under the name "FIFA Quality" certificate, in which manufacturers show the accuracy of their devices against a *Gold Standard* registration system. **Tables 1** and **2** show those manufacturers that provide UWB technology-based devices with IMS or "FIFA Quality" certificates.


#### **Table 1.**

*UWB manufacturers with IMS certificate.*


**Table 2.**

*UWB manufacturers with FIFA quality certificate.*
