Not only does this process take a long time to master, but the price can not be cheap for most people. You can purchase a non Bio-recognition sword if you are simply looking for self defense. It is considerably cheaper and can work just as fine, even in tough situations. Most Bio-recognition swords are broadswords and hammers; something that would be more heavy and slightly clumsy to use. Katanas, daggers, and beam canons are more common for the non recognition types. These swords/canons have a switch and can only be turned on for a short amount of time to prevent the possible misuse.
All Techblades, however, are registered under the name of the creator, this helps prevent the loss and destruction of different weapons. If one decides to give up their blade when entering the next cycle, it is returned to the creator to be wiped of Bio-recognition and prepared for their next client. Because only three items are allowed to be kept, this is more common than not. This is also a cheap option, however you cannot customize