Wearable ECG and EDA with Multi-Lead and Single-Lead Connections

A method for acquiring data for at least one biometric measurement, comprising:

• determining a first contact formed between a first electrode and a first input source, the first electrode positioned within a form factor of a wearable device;
• determining the first contact exceeds a first threshold, the first threshold indicative of a first quality of data received from the first contact;
• providing instructions to engage a second electrode with a second input source, the second electrode positioned within the form factor of the wearable device;
• determining the second contact exceeds a second threshold, the second threshold indicative of a second quality of data received from the second contact;
• providing instructions to maintain the first contact and the second contact;
• and
• acquiring data from the first contact and the second contact.

A wearable device for determining a physical property of a user, comprising:

• a housing including a top surface and a bottom surface, the top surface and bottom surface being electrically isolated from one another, wherein the bottom surface is adapted to contact a first extremity of a user while being worn by the user;
• a first electrode, in the top surface, the first electrode positioned out of contact with the first extremity of the user when the wearable device is worn by the user, wherein the first electrode is adapted to receive an input from a second extremity of the user;
• a second electrode, in the bottom surface, the second electrode positioned into direct engagement with the first extremity while the wearable device is worn by the user;
• and
• a third electrode, in at least one of the top surface or the bottom surface, the third electrode electrically isolated from both the first electrode and the second electrode.