Bioengineers at Stanford University have turned living cells into data storage devices that can store a rewriteable small amount data, just like silicon devices. Sections of DNA in the researchers’ engineered cells can sit in one of two positions, representing the 0s and 1s of digital data. “Essentially, if the DNA section points in one direction, it’s a zero. If it points the other way, it’s a one,” Pakpoom Subsoontorn, one of the researchers in the study, said in a statement. Biological bits might help future scientists count cancer cells as they divide or study other life processes. For now, however, it’s accomplishment enough just to get biological stuff to hold and rewrite digital data, said Drew Endy, senior scientist in the project.