The green card, kept properly.

One line for every check-up — the date, the blood pressure, the heart rate, the sugar, the weight, and who took it. The same record as the card in the patient's bag, except that it cannot be lost, two people can read it at once, and it notices a dangerous number by itself.

Nothing is ever lost

A reading is written once. A wrong one is corrected, and the original stays underneath it with the reason.

Everyone signs their work

Initials come from the account, not the pen.

Every look is recorded

Opening a patient's record is logged, as the Data Protection Act 2019 expects of health information.