Soft boot pulse oximetry sensor

A sensor for measuring a signal indicative of at least one physiological parameter of tissue, the sensor comprising:

• a sensor housing configured to be disposed about a finger of a user, the sensor housing including rubber or an elastomeric material, a distal end of the sensor housing comprising a lip forming an opening of the sensor housing to receive the finger, the sensor housing further comprising a top compressed portion and a bottom compressed portion;
• an emitter contained in the top compressed portion, the emitter configured to emit light of at least two different wavelengths;
• a hard shell box contained in the bottom compressed portion, the hard shell box comprising a material harder than the rubber or the elastomeric material, a portion of the hard shell box protruding from a bottom surface of the sensor housing;
• and
• a detector contained in the hard shell box, the detector configured to detect the light after attenuation of the light by body tissue of the user.