The technology

Two moments a day when you cannot see them. We built one product for each.

The car, where a quiet baby behind you is out of sight for the length of a drive. The cot, where the longest stretch of the day passes with nobody looking. Neither is about danger. Both are about distance, and about closing it faster than a person can on their own.

In the carBabi Seat™In the cotBabi Angel™

Chapter 1 · In the car

Babi Seat™

A thin cushion on the child seat that knows when it is occupied, alerts your phone until you are back, and tells your family where the car is.

The Babi Seat cushion fitted on the seat pad of a child car seat

The technology

Two names. Each says what it does.

Presence

SeatSense™

A thin cushion on the seat pad senses whether anyone is sitting on it. It knows the seat is occupied without anything to switch on.

Escalation

BabiRelay™

Your phone first, and it keeps going until you are back in range. Not back within minutes, and the people you chose get the car’s location. Whoever is closest gets there.

Why it happens

It is not about love. It is about routine.

Two memory systems run in every healthy brain. One holds intentions: the baby is in the back, I am stopping at nursery. The other runs practised routines on its own: the commute. They compete, and a practised route can complete itself while the intention waits to be interrupted.

Sleep loss, stress and a change of routine are exactly the conditions that break that interruption. New parenthood supplies all three at once, for months. A tired parent is not careless. They are momentarily absent, and then present again.

  • 62 minof sleep lost per night by mothers in the first three months. Neither parent gets back to pre-pregnancy sleep within six years.Richter et al., Sleep, 2019. 2,541 women and 2,118 men.
  • Three at onceSleep loss, stress and a changed routine, all supplied by new parenthood, for months.
  • Not carelessMomentarily absent, then present again. That is the gap the Seat is built for.

Why there’s no countdown

Why it alerts the moment you walk away.

A parked car warms up fastest in its first few minutes, on a mild day as much as a hot one. So Babi doesn’t wait. The moment you and your phone leave range with the seat occupied, it alerts you.

+11 °Cin the first ten minutes (about 20 °F)

The cabin warms fastest at the start, on a mild day as much as a hot one.

McLaren, Null and Quinn, Pediatrics, 2005
30 minfor most of the warming

Most of the rise happens within half an hour. A cracked window makes no meaningful difference.

McLaren, Null and Quinn, Pediatrics, 2005
3 to 5×faster than an adult

A baby’s temperature climbs three to five times faster: more skin for their size, and a cooling system still being built.

NHTSA

What cars already do

Some cars remind you to check. None of them know.

Most built-in reminders work on door logic: the rear door opened before the journey, so a message appears when you switch off. They do not sense a child.

24 of 74In NHTSA’s 2024 tests the built-in reminder failed to alert in 24 of 74 trials, and none detected a child who got into a locked car alone.
Babi SeatBuilt-in reminder
Senses a child in the seatNo, door logic
Works in any car, whoever is drivingOnly that car
Keeps alerting until you are backNo
Tells your family where the car isNo

What happens

An alarm is a noise in an empty car. A relay keeps going until it reaches a person.

  1. 1

    The Seat notices

    Occupied, and you and your phone have gone out of range. At once.

  2. 2

    Your phone

    Sounds, vibrates and lights up, even on silent, and keeps going until you are back.

  3. 3

    Your people

    Not back within minutes, and they get the car’s location. Up to ten of them, and the closest one gets there.

Range is about 15 metres between the cushion and your phone or key fob. GPS location comes from your phone.

It gets a person back to the car. That is the whole claim.

  • It does not prevent anything. No device can. It notices, and it tells people.
  • It does not replace you, or a look in the back before you lock the door.
  • It will sometimes be wrong. A sensor is a sensor, and a false alert is the price of not missing a real one.
  • It will not frighten you into buying. We would rather you knew exactly how it works.

Babi Seat is an accessory that lies on the seat pad of your child’s car seat. It does not change how the seat is fitted or used, and it is not a child restraint.

See the Seat

Chapter 2 · In the cot

Babi Angel™

A soft band that shows you your baby’s temperature, oxygen level and heart rate through the night, so you can look in without opening the door.

The Babi Angel band and sensor

Why it exists

Eleven hours, another room, and you asleep too.

Sleep is the longest stretch of every day in which nobody is looking, and it is when a baby signals least. Muscle tone is lowest, arousal is blunted, and a parent in the next room has the least to go on.

So parents get up. Again and again, waking the baby half the time. That is the problem Angel is for. Not fear. The stairs.

  • Three readingsTemperature, oxygen level and heart rate: the three readings no parent can take by looking in.
  • Two phonesPaired to two phones, so whoever is awake can check.
  • A glanceMost nights you will glance at it and go back to sleep. That is what it is for.

The readings

Why each reading matters.

Temperature

The one already in safer-sleep advice. Babies drift with the room rather than holding steady, so too warm is a known thing to avoid. In the first months a fever, or a low reading, is worth a call rather than a wait.

Oxygen level

The one no eye can see. A baby’s oxygen reserve is small and used about twice as fast for their size as yours, so a change shows in the reading long before it shows in the room.

Heart rate

The one that confirms the others. Rarely useful alone, valuable alongside. It rises with fever and distress, and it helps tell a real change from a band that has slipped.

Angel does not diagnose, treat or prevent any condition. It shows you readings within the accuracy stated, and nothing beyond them.

Readings and alerts

BabiTrack™

A soft band on the ankle tracks pulse rate, oxygen level and skin temperature and shows you what it finds in the BabiCare app, on up to two phones. If a reading moves outside the range you set, your phone tells you.

BabiTrack™ describes what the band tracks and what it sends. It does not describe what it prevents, because it does not prevent anything.

When a reading changes

It does not decide anything. It gets a person to the room.

  1. 1

    The band notices

    A reading moves outside the range you set. At once.

  2. 2

    Your phone

    Vibrates, sounds and flashes, even on silent, so you can go and look. Pair the app on two phones and whoever is awake can check.

  3. 3

    Your guardians

    Not dismissed, and the other people you registered in the app are told, with a location, so it never rests on one pair of eyes.

Most nights you will glance at it and go back to sleep. That is what it is for.

It shows you. It does not tell you.

  • It will not prevent anything. No monitor of any kind has ever been shown to prevent a sudden infant death, and we will not imply otherwise.
  • It will not tell you your baby is well. It shows you numbers. Reading them is your job, and if you are ever worried, the answer is a doctor and not an app.
  • It will not catch everything. Movement, a slipped band and darker skin tones can all affect a reading.
  • It will not replace you, or safer-sleep advice. When it tells you something, the point is that you go and look.

Babi Angel is not intended to diagnose, treat, cure or prevent any disease or condition, including Sudden Infant Death Syndrome. It is not a substitute for adult supervision or safer-sleep practice.

See the Angel

Patented

Our own designs. Both patented.

Babi Seat™ and Babi Angel™ were designed by Babi from the ground up, and both are protected by granted patents.

  • Babi Seat™

    The car-seat cushion that senses your baby and alerts you.

    Patented

  • Babi Angel™

    The night-time band that shows your baby’s readings on your phone.

    Patented

If you are here because you are frightened, we want to be straight with you.

This will not make your baby safer. What it will do is let you look without getting up. For some parents that is worth a great deal, and for others it makes the worry louder. Only you know which you are.

Where it earns its place is the ordinary night. A glance at the phone, and back to sleep.

Where our numbers come from

The car

  • Norman, Psychological Review, 1981. Poldrack and Packard, Neuropsychologia, 2003. The capture error and competing memory systems.
  • Richter et al., Sleep, 2019. Sleep after a first birth, 2,541 women and 2,118 men.
  • Lim and Dinges, Psychological Bulletin, 2010. Seventy studies, 1,533 participants: sleep loss affects attentional lapses more than any other measure.
  • McLaren, Null and Quinn, Pediatrics, 2005. The heating curve, and the cracked-window test.
  • NHTSA. A child’s body temperature rises three to five times faster than an adult’s.
  • Prasad and Snyder, NHTSA, DOT HS 813 669, December 2024. Built-in rear seat reminders tested across twelve vehicles.
  • There is no UK dataset on children left in hot cars. We do not use figures from other countries in its place.

The cot

  • AAP Task Force, Pediatrics, 2022. Safer-sleep recommendations, including that home monitors are not a way to reduce risk.
  • The Lullaby Trust. Safer-sleep guidance on room temperature and overheating.
  • MHRA, decision on baby breathing and movement monitors, February 2021.
  • FDA, cleared wording for infant pulse oximetry monitors: a notification to the caregiver, prompting them to assess the infant.
  • Infant physiology summarised from standard paediatric references: more skin for their size, immature temperature control, a smaller oxygen reserve.