* https://hackaday.io/event/19387-tindiechat/log/54109-tindiechat-transcript-feb-28-2017-certifications
  * http://processors.wiki.ti.com/index.php/How_to_Certify_your_Bluetooth_product
  * https://www.sparkfun.com/tutorials/398
  * https://www.tindie.com/stores/emcfastpass/
  * https://blog.tindie.com/2016/06/a-guide-to-certifying-your-electronics-widget/
  * https://hackaday.com/2017/02/25/tindie-chat-all-about-certifications/
  * https://www.reddit.com/r/hwstartups/comments/39pgbg/what_qualifies_as_a_subassembly_for_fcc_testing/
  * https://www.govinfo.gov/content/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-part15.pdf