Geneticists can store data in synthetic DNA as a medium for long-term storage due to its density, ease of copy, longevity and sustainability. Research in the field had recently advanced with new encoding algorithms, automation, preservation and sequencing. Nevertheless, the most challenging hurdle in DNA storage deployment remains the write throughput, which can limit the data storage capacity. In a new report, Bichlien H. Nguyen, and a team of scientists in Microsoft Research and computer science and engineering at the University of Washington, Seattle, U.S., developed the first nanoscale DNA storage writer. The team intended to scale the DNA write density to 25 x 106 sequences per square centimeter, an improved storage capacity compared to existing DNA synthesis arrays. The scientists successfully wrote and decoded a message in DNA to establish a practical DNA data storage system. The results are now published in Science Advances.