Yii2: How to enable/disable form-field dynamically

I'm new to Yii2 and web-application development at all. I have an Kartik ActiveForm which includes a Checkbox to select if the user is also a driver. Only when this checkbox is checked, the following field "RFID Number" should be enabled, else should be disabled.

How can I implement this functionality? Following my user form code:

<?= Form::widget([
     'model'=>$model,
        'form'=>$form,
        'columns'=>2,
        'attributes'=>[ 
            'username'=>['type'=>Form::INPUT_TEXT ],
            'permission'=>[
                'type'=>Form::INPUT_DROPDOWN_LIST, 
                'items' =>[$authItems],
                'options'=>['prompt' => Yii::t('app', 'Select User Role')]],
            'user_is_driver'=>['type'=>Form::INPUT_CHECKBOX ],
            'rfid_number'=>['type'=>Form::INPUT_TEXT,'options'=>['disabled' => true]],
            'forename'=>['type'=>Form::INPUT_TEXT ],
            'lastname'=>['type'=>Form::INPUT_TEXT ],
            'email'=>['type'=>Form::INPUT_TEXT ],
            'fone'=>['type'=>Form::INPUT_TEXT ],
            'mobile'=>['type'=>Form::INPUT_TEXT ],
            'company_id'=>[
                        'type'=>Form::INPUT_DROPDOWN_LIST, 
                        'items' =>[ArrayHelper::map(Company::find()->all(),'id_company','name')],
                        'options'=>['prompt' => Yii::t('app', 'Select Company')]],
            'password'=>['type'=>Form::INPUT_PASSWORD ]
         ]
    ]); ?>

Thanks for any help!