How to wake up one only instead of their partner too?

Headphones. Or if you go with vibration, something that attaches directly to the person’s body, like a bracelet or anklet.

Dunno, I’m such a light sleeper that if you wake my partner up, then you woke me up too.

Splash them with ice cold water (or “wader” as americans say).

I have tried that a kiss is quite effective for a pleasant wake-up! Well…. But he needs time to cold down afterwards :p

Train the dog to slobber over the face of the one person who needs to wake up.

(You need time to cool down.)

How about a sleep mask that has LEDs on the inner surface, where the eyes are. There’s a separate bedside clock that sends a bluetooth signal to the mask, which makes the LEDs blink on and off.

Place a clothes peg over the nose of the one intended to stay asleep, fart right into the face of the about to be immediately wakened one, works a treat…..i’m guessing.

Lark – Wake Your Potential. Not your partner.
Zeo is similar.

Most of the companies go with the solution you’ve dismissed. Basically a vibrating bracelet.

If you want to switch it up, undies that got cold at the given time, vibrated, or become constrictive would certainly encourage wakefulness.

Make a small “rumbler” that’s bluetooth enabled. You could make a few different types of rumblers, one that fits inside a pillow, wear as a watch or ankle bracelet, an earplug… etc. The rumbler could vibrate or shock (like a dog collar). Set an alarm on a smartphone app. The app will send signal to rumbler when alarm is triggered.

My husband has discovered that when he wears earplugs he sleeps through my alarm. Some differences though: I sleep more lightly and retire earlier than he does. He goes to bed and sleeps later than I do, and I wake up often over night. But he says that his earphones actually work, and it takes a sleep medication- Remeron- for me to sleep at all.

edit: His earplugs didn’t keep me from waking him up when I had my first tonic-clonic seizure around him. I usually have simple partial seizures and am conscious throughout them. I can even talk to you and tell you I’m having one. When I had that particular seizure I fell over in our bathroom. (I pulled and Elvis and fell off the toilet) than I started jerking. Luckily he heard me. Because he wasn’t used to them he called the squad, and I didn’t begin to wake up until they arrived and tried to begin to put me on the stretcher.

How about a weaker and smaller version of the grocery store blood pressure cuff that relaxes and constricts at intervals? I think this would work better than vibration, and have les chance of waking the partner – might feel like being tapped by someone a few times, I’d imagine.

There are also the expandable anti-embolism compression stockings that one wears after surgery. They are very efficient because they keep the wearer up all night.