Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
full use of the fitbit service is dependent upon your use of a computer with adequate software or a supported mobile device and internet access . 

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