Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
any violation or attempted violation of this provision may result in the immediate termination of your ability to access the fitbit service . 

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