Very interesting, but not the solution to our worries just yet. There are a couple of points of failure that immediately occur to me:
DNA can quite easily decay if not stored properly.
Who else knows the system of converting DNA base pairs back in to your private key - the article suggests it's just that one guy. Very risky.
The article doesn't talk about an actual DNA here. What they are planning is synthetic DNA which can form of a physical liquid sit at the bottom of a small tube. If actual DNA is used then a simple blood test can be proved disaster for those people. So no plans of using an actual DNA has been discussed.
But I don't think such kind of security is needed at least as of now. Also adding or removing bitcoins from the DNA secured wallet will be cumbersome.
Everytime someone would want to add or remove bitcoins to their storage, they will have to go for an entire lab sequencing system to decrypt the wallet and access it. Those 1000 people must be bitcoin billionaires!
You don't need to go to the doctor each time you want to make a transaction. It would be ridiculous doing so. It's about storage, and thinking about it, it can be a lot of better than a hard drive. Compare for example with a USB stick. Isn't it limited to XXXX read/write and then stop to work? A DNA used as to store data would last a lot longer
Problem: Research says by 2025, humans could be producing 160 zettabytes of data -- that's 160 trillion gigs, or 10 times more than we generated in 2016. By 2040, research estimates we will not have enough microchip-grade silicon to store it all on hard drives. In fact, cheaper magnetic tape is a more common solution for long-term storage today. (Although it may last a decade or two before it needs to be replaced.)
SolutionDNA could eliminate that issue. In one gram of synthetic DNA, scientists could theoretically fit 215 petabytes of information. That's over 100 million movies in something that's smaller than a jellybean -- and it lasts hundreds of years.
So, preserving a family photo album in DNA? It's not practical yet. But how about 50 bytes worth of characters that can unlock a valuable cryptocurrency wallet? Sure, maybe an investor won't mind dropping a grand for that.
Microsoft put 200 megabytes of data into 13 million DNA oligonucleotides
https://news.cs.washington.edu/2018/02/19/uw-and-microsoft-researchers-achieve-random-access-in-large-scale-dna-data-storage/