FCC Declaration of Conformity

Our NFC devices using EviToken, EviVault, EviCypher and EviSwap technology from Freemindtronic comply with Part 15 of the FCC Rules.Their operation is subject to the following two conditions:

  1. NFC devices may not cause harmful interference, and
  2. NFC devices must accept any interference received, including interference that may cause undesired operation.


These fully passive devices have no battery. They do not produce any radio frequency signal. They use energy harvesting through the NFC signal of the phone.The devices are NFC products. They do comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. These devices do not generate or emit any radio frequency energy. When not used in accordance with the instructions, they may cause harmful proximity interference to other 13.56 MHz radio communications on other NFC ISO / IEC 15693 and 14443 devices. If these devices cause harmful interference to radio reception from other devices, the user is encouraged to try to correct the interference by one or more of the following measures: These devices are more than 4 inches away from other equipment.Increase the separation distance between devices and other equipment.

Datasheet of the components used


Component: ST25DV64KC
Manufacturer component: STMicroelectronic


Component: ST25TV02K
Manufacturer component: STMicroelectronic


Component: LRIS64K
Manufacturer component: STMicroelectronic
Application note: AN3408

Use of the NFC devices

  • Contactless encrypted data storage devices

White label manufacturer

Compagny name: Freemindtronic SL
Name/Title (legal representative): Jacques Gascuel CEO
Address: Av. Co-Prince de Gaulle, No. 13, Building Valira ground floor, AD700 Escaldes – Engordany, Principality of Andorra
Phone: 00376 804 500
Email support (at) freemindtronic (dot) com

Consumer product brands

Keepser® products by Keepser Group Andorran compagny (https://www.keepser.com)

Kubb Secure® product (https://www.kubb-secure.com) by Bleujour French compagny (https://www.bleujour.com)

Escut® confidential product for private security by ESCUT SL Andorran compagny

Freemindtronic® confidential product by Freemindtronic SL Andorran compagny (https://freemindtronic.com)

Consult the dealer or an experienced technician for help.

Monday, march 28, 2022
Document version 1.0

Jacques Gascuel
Freemindtronic’s CEO
Graduate in Industrial Electrical Engineering