It has to be clear that investores need to keep in mind that this is a mid to long term project.. because we're talking about people's health.
Which actualy means that they should take care of the info that is given to the people using the devices.. and there cannot be any error in the results.
So.. Taking in account that there will be a thorough testing period and the fact that those devices need to be placed on location that have been allowed for these... its quite obvious it will take some time to finetune.