> ## Knowledge Base Index
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> Use this file to discover available pages before exploring further.
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# Can a FoodMarble device be shared?

### Can a FoodMarble Device Be Shared by More Than One Person?

FoodMarble devices are intended for personal use, and you’ll get the best experience when one device is dedicated to a single user. Let us explain why.

### 🔋 Device longevity
* FoodMarble devices were designed with one user per device in mind.
* Each device has safe usage guidelines (e.g., no more than **10 breath tests in a 24-hour period**).
* Sharing may inadvertently increase the number of tests per day, which can shorten the device’s lifespan.

### 📊 Personalised tracking and accuracy of insights
* The app is designed to help **build your personal profile** by combining your breath readings with your diet, sleep, stress, and symptoms.
* If sticking to the safe usage guidelines, sharing a device reduces the number of tests available per person, making it harder to build up as much data and spot meaningful trends in your digestive health.

### 🧼 Hygiene and safety
* While the removable mouthpiece can be cleaned, sharing still introduces hygiene concerns.
* The body of the device must always be kept dry and away from cleaning products — so it cannot be fully sterilised.
* Mouthpieces should only be wiped clean (avoid alcohol wipes, as alcohol can damage the sensitive sensors).

✨ **In summary:** FoodMarble devices are most effective — and safest — when used by one person only. This ensures you get accurate results, reliable insights, and the best possible experience with your device.