# Statistics about ZK UX Sources Usage

## The Problem

### # of Ethereum EOA vs Smart Contract Wallets

### % lost by lost seed phrases
By 2020:
- It is estimated a total of **~20%** of BTC is lost forever due to lost seed phrase or passwords. [(1)](https://blockzeit.com/how-much-bitcoin-has-been-lost-forever/) [(2)](https://www.businessinsider.in/cryptocurrency/news/investors-likely-to-lose-almost-545-million-worth-bitcoin-in-2022-by-forgetting-passwords-and-various-other-mistakes-suggests-report/articleshow/91126423.cms#:~:text=A%20seed%20phrase%20is%20a,those%20funds%20are%20irretrievably%20lost.) [(3)](https://www.nytimes.com/2021/01/12/technology/bitcoin-passwords-wallets-fortunes.html)

### # of people who skip seed phrase backup (Metamask, et al)

## The Possibilities

### # crypto users
In 2023:
- Estimated **420 million crypto users** around the world [(1)](https://www.zippia.com/advice/cryptocurrency-statistics/#:~:text=There%20are%20an%20estimated%20420,users%20grew%20by%20190%25%20globally)

Fun note: if it was a country it'd be the 3rd biggest country in the world.

### # cellphones and projections
In 2023 worldwide:
- **6.84 billion** smart phones, that is **~85%** of the 8 billion **global population**.
- Even more possibilities with **16.8 billion** mobile devices [(Ref)](https://explodingtopics.com/blog/smartphone-stats)

### # devices that support biometrics
In 2022, Cisco reports:
- **81%** of all smartphones have **biometrics enabled**. [(1)](https://www.biometricupdate.com/202211/cisco-report-81-percent-of-all-smartphones-have-biometrics-enabled#:~:text=Cisco%20report%3A%2081%20percent%20of%20all%20smartphones%20have%20biometrics%20enabled,-Company%20unveils%20new)

### # devices that support WebAuth
WebAuthn is currently partially supported in **Google Chrome, Mozilla Firefox, Microsoft Edge and Apple Safari web browsers**, as well as Windows 10 and Android platforms. [(1)](https://fidoalliance.org/fido2-2/fido2-web-authentication-webauthn) [(2)](https://webauthn.me/browser-support)

### # cellphones android vs iphone
In 2023 worldwide:
- Android has a **71.63%** OS market share
- iOS has a **27.68%** OS market share
- However, in the US, iOS leads with a **55.85%** while Android a **41.89%** market share. [(1)](https://explodingtopics.com/blog/smartphone-stats)

### # emails sent daily
347.3 billion emails are sent globally each day
[(1)](https://www.zippia.com/advice/how-many-emails-are-sent-per-day/#:~:text=Email%20FAQ,billion%20were%20sent%20each%20day.)

### # email users
4.37 billion worldwide in 2023
[(1)](https://www.oberlo.com/statistics/how-many-people-use-email#:~:text=Email%20user%20statistics%3A%202022%E2%80%932026&text=Analysts%20expect%20this%20number%20to,projected%20to%20hit%204.73%20billion.)

GitHub has announced that **100 million developers** are now using the platform
[(1)](https://techcrunch.com/2023/01/26/github-says-it-now-has-100m-active-users/#:~:text=Code-hosting%20platform%20GitHub%20has,are%20now%20using%20the%20platform.)