• Two years ago, researchers demonstrated that data could be saved and reread in the form of DNA. In that case, the time period between 'writing' the information -- the synthesis of the corresponding coding sequence of the DNA -- and the reading, or sequencing, of the data was very short. This presents a problem in terms of the margin of error, as mistakes occur in the writing and reading of the DNA.
  • To combat this, researchers recently encapsulated the DNA in silica spheres with a diameter of roughly 150 nanometres. In order to simulate the degradation of the information-bearing DNA over a long period of time, researchers stored it at a temperature of between 60 and 70 degrees Celsius for up to a month.
  • To make sure that the data could be read error-free, they developed a scheme to correct these errors based on the Reed-Solomon Codes, similar to those that are used in the transmission of data over long distances.The key is additional information attached to the actual data. The DNA-encoded data is indeed more complex, but in principle the researchers' DNA-encrypted security 'back-up' functions in the same manner.

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