1 INTRODUCTION  
2 RELATED WORK  
3 FIDO2/WEBAUTHN AND CTAP2 OVERVIEW  
4 FIDO UNIVERSAL AUTHENTICATION FRAMEWORK (UAF) OVERVIEW  
5 FIDO U2F/CTAP1  
6 MARKET PENETRATION AND APPLICABILITY  
7 CRITIQUE ON FIDO PROTOCOLS ADOPTION  
8 CONCLUSION