Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
the fitbit service is intended for your personal , non-commercial use . 

```
. OPTIONS: ['Jurisdiction' 'Unilateral change' 'None' 'Contract by using'
 'Unilateral termination' 'Limitation of liability' 'Content removal'
 'Choice of law' 'Arbitration'].