Fall Detection and False Alarms: Settings That Help

Why false alarms happen

Fall detectors read movement. They cannot know whether a sudden movement is a fall or a normal action that looks similar. Common causes of false alarms:

• Sitting down hard, dropping into a sofa or a car seat.
• Sudden arm movements: clapping, waving, vigorous brushing, kneading dough, hammering, dancing, shaking hands.
• Dropping or knocking the device, or taking it off and putting it down hard.
• Bumpy transport: autorickshaws, buses, trains and two-wheelers on rough roads.
• Tremor or involuntary movements, as in Parkinson's disease.
• Lying down quickly on a bed, or stumbling and recovering.
• Poor fit, where a loose watch flops around on a thin wrist.
• Software and sensitivity settings that are too high.
• Low battery or a faulty device.
• Pressing the SOS button by accident, particularly if it is on the side of a watch.

Why real falls are missed

• The fall pattern does not match the detector's model: slow slides down a wall, falls onto a bed or chair, falling forward onto the hands, or a fall with a soft landing.
• The person moves after falling, such as crawling, so the stillness test fails.
• The device is not worn, or is worn loosely or on the wrong wrist.
• The battery is flat.
• The sensitivity is set too low to avoid false alarms.
• No signal prevents the alert from leaving the device.
• The alert was cancelled by the wearer, confused or in pain, or by a helper.
• The alert was ignored by the recipient, who assumed another false alarm.

Because detection is imperfect, never rely on it alone. Keep a manual button, use regular check-ins and reduce fall risk; see falls risk assessment at home.

Settings that help

Features vary by device. Read the manual, and ask the supplier or maker's support. Typical options:

Sensitivity level. Many devices offer low, medium and high settings. A higher setting detects more falls but triggers more false alarms; a lower one reduces false alarms but may miss gentle falls. Start in the middle. If false alarms are frequent, lower it slowly. If your parent has had slow falls, consider raising it. Change one thing at a time and watch for a few weeks.

Confirmation delay (countdown). Before an alert goes out, the device vibrates or sounds, and the wearer has a short time to cancel. A longer countdown gives time to cancel an accidental alert but delays real help. Many devices allow 15 to 60 seconds. For a person who can respond, 20 to 30 seconds may balance well. For someone who is likely to be unable to respond, such as with fainting spells, choose a shorter countdown. Discuss with the doctor.

Cancel method. Know how to cancel: a button press, a swipe or a voice command. Practise. Make sure the person knows that cancelling is allowed and normal, and that they do not feel blamed for a false alarm.

Alert volume and vibration. Loud enough to hear, but a person with hearing loss may need vibration or a strong tone; see hearing loss home care guide.

Activity modes. Some devices have a mode for exercise, sleep or driving that adjusts detection. Use only if it makes sense for the person, and remember to turn it back.

Location sharing and notification content. Set the alert to include location, the time and the type of event, so responders can judge. Avoid sending alarms to many people at once without clear roles.

SOS button lock. Some watches have a protection against accidental presses, such as requiring a long press. Choose the setting that your parent can manage.

Contact order. Put the people most likely to respond first, and set escalation to another contact or a monitoring service if there is no answer; see responding to an alert: who does what.

Quiet hours. Think carefully before silencing alerts at night; many falls happen then. If you must, ensure at least one person has alerts on.

Firmware and app updates. Keep software updated, as makers improve detection.

Wearing the device properly

• Wrist devices: wear snugly, with the sensor against the skin, a finger's width above the wrist bone. A loose watch moves around and triggers false alarms and misses real ones. Use the strap holes the maker recommends, and choose a soft strap that does not irritate thin skin.
• Pendants: wear on a lanyard so that it lies against the chest, not swinging freely. Some people prefer a clip on the belt or bra strap; check the position that suits the device.
• Choose the wrist or position the maker recommends. Some devices are tuned for the non-dominant wrist.
• Wear it consistently, including at night if the device allows, and charge at a fixed time of day.
• Do not wear over clothing that causes movement.
• Check the skin for rubbing or redness.
• Avoid leaving it on a bedside table when going to the toilet; falls often happen on that short trip; see night-time toilet trips and falls.

Reducing activity-related false alarms

• Sit down gently and tell your parent that a heavy thump on a chair can trigger the device.
• Remove the device or switch mode before activities with strong arm movement, such as washing clothes, vigorous exercise or dancing, if they cause alarms, then put it back.
• Take care on rough journeys, when the device may be shaken.
• Do not throw the device down or leave it in a bag that is thrown.
• For tremor, discuss with the supplier and doctor whether a different device or a different location on the body works better.
• Charging time: charge when seated and not wearing it; avoid wearing while charging.

A family agreement about responding

Technology is only as good as the human response. False alarms cause alert fatigue: people stop taking alerts seriously. Agree on a plan.

1. Treat every alert as real until proven otherwise. A false alarm is a small cost; a missed fall is not. 2. Call back immediately and check. If the person answers and is fine, thank them, do not scold. If they do not answer, go or send someone, and call 112 if concerned. 3. Assign roles: who calls first, who goes, who calls the ambulance. See responding to an alert: who does what. 4. Keep a log of alerts: date, time, cause, outcome. Patterns show whether the device needs adjusting. 5. Do not mute alerts because of annoyance. Fix the cause. 6. Make false alarms safe: reassure your parent that it is fine to press SOS "by mistake"; never make them feel foolish. 7. Review monthly how many alarms, how many false, and what changed. 8. Share the load, so one person is not woken every night; see night safety for a parent alone.

When to change the device or the plan

Consider changes if:

• false alarms continue despite adjusted settings and fit;
• real falls were missed;
• the person finds the device uncomfortable or confusing and takes it off;
• the battery or signal is unreliable;
• the person's condition has changed, such as new tremor or confusion;
• the family can no longer respond to alerts reliably.

Options include a different type (pendant versus watch), a monitoring service that filters false alarms, adding door, bed or motion sensors (see door sensor guide), more frequent phone check-ins, or moving to a living arrangement with more support; see when home care is no longer enough.

Remember the human side

False alarms can embarrass and anger older people, who may feel watched and blamed. Preserve dignity. Explain why the device exists. Offer a say in settings. Consider consent and privacy: who receives alerts, what is shared and for how long; see privacy and dignity with monitoring. A device that is trusted will be worn.

When to ask a professional

Ask the supplier or support team for help tuning the device. Ask a doctor if your parent has fainting, dizziness, tremor or confusion, since these affect both falls and detection. A physiotherapist can assess balance and strength, and an occupational therapist can advise on the device and home. For support and information about services for senior citizens, call Elderline 14567. In an emergency, call 112.