It’s not exactly DIY but there are in theory ways to ‘encrypt’ your DNA before it gets sequenced. Something like amplifying/enzymatically modifying the DNA in a

It’s not exactly DIY but there are in theory ways to ‘encrypt’ your DNA before it gets sequenced. Something like amplifying/enzymatically modifying the DNA in a way that changes the sequence which you can undo computationally once you get the data back.