As soon as you don't control the whole thing end-to-end, i.e. from the user entering the data to printing it on an envelope: it won't work at all. It would require every program in the whole chain to accept this "big blob", which is simply not going to happen.
As soon as you don't control the whole thing end-to-end, i.e. from the user entering the data to printing it on an envelope: it won't work at all. It would require every program in the whole chain to accept this "big blob", which is simply not going to happen.