Depending on what you mean by "anything technical", I seriously doubt that. Shorthand dominated the world of commerce and law for a long time, and it's not like they don't use a bunch of jargon too. Just come up with (or find someone elses invention of) the important abbreviations and you're all set.
A propely written shorthand note should be readable by other people. Journalists are in some countries required by law to keep their shorthand notes for a certain amount of time, so they can be used as evidence in court (and then obviously read by an uninterested third party.)
If you have to write really, really quickly, then yes, typing your notes up properly soon afterward is a good idea. If you aren't under any sort of time pressure and just casually note things down, you should be able to read it years or decades later.
A propely written shorthand note should be readable by other people. Journalists are in some countries required by law to keep their shorthand notes for a certain amount of time, so they can be used as evidence in court (and then obviously read by an uninterested third party.)
If you have to write really, really quickly, then yes, typing your notes up properly soon afterward is a good idea. If you aren't under any sort of time pressure and just casually note things down, you should be able to read it years or decades later.