Table 1.

Step-by-step workflow for the acquisition of body weight, blood pressure, heart rate, medication intake, and well-being by the patient using NFC technology (BW … body weight, BP … blood pressure, HR … heart rate).

Step	Interaction by the patient	Behavior of mobile phone application
1	measure BW, BP and HR
2	touch ID card	application launch, user authentication next: ask for BW
3	touch NFC interface box of BW scales	read BW data next: ask for BP and HR data
4	touch BP meter	read BP and HR data next: ask for CHF medication
5	touch one of the following icons to confirm intake of CHF drugs •dosage taken as indicated •higher dosage taken •lower dosage taken •not taken today	read the tag data of the touched icon next: ask for next CHF drug (repeat step 5, up to 4 times) or next: ask for well-being (continue with step 6)
6	touch the smiley icon which fits best to the current well-being •good •indifferent •bad	read the tag of the touched icon next: transmit all data and close application