Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
when using the products , you agree to transact with us electronically , and that communication with us will be mainly electronic . 

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