Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.
Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.
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MongoDB Atlas runs apps anywhere
Deploy in 115+ regions with the modern database for every enterprise.
MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
...The result is that no matter how long the number is you can write it down on a piece of paper and put it in your pocket. The software can be used to retrieve the number. This can be used to save computer files. The only limit with BNS is how much time the user has. The software nor the numerical system has no limits.
The book on BNS is here https://www.createspace.com/4404221
The inventors websight is here: http://timetravelinstitute.biz