Blood pressure is the most accurate way to determine a patient's condition. Electronic blood pressure machines, can provide a quick way to do a complete assessment of a patient, so medications dosages based of blood pressure can be administered in a timely manner. Pulse oximeters are great to measure oxygen saturation levels and pulse rates as well. In conclusion, the use of electronic devices for vitals are a benefit of technology providing it is quality equipment.
It would only be OKAY to disclose somebody's personal health info if they are in medical danger, and the person you are disclosing the info to is certified in medical situations.