Sorry, I must have skimmed too quickly and missed that.

Look for an expiration date. Radionucleotide style detectors end up failing with false positives when they reach end of life. You might need to have all the old ones replaced.

The majority of people occupying the same bed will have congruent driver/passenger sides. Distant strangers don’t need to know which side you are referring to. Couples from different regions could adopt the local convention.

The terrible state of online play ruined everything nintendo for me.