WhatsApp link to Desktop PC a 'RISK'

WhatsApp overall is simply great, for many reasons which include that fact that you can synchronise your phone account with your desktop PC. The RISK in doing this however is that at fist you need to SCAN the QR code WITH your phone (present, obviously) to link and download your messages, but AFTERWARDS when you search for the WhatsApp App used PREVIOUSLY in the HISTORY section on your GoogleChrome browser button (top right-hand triple button), IT DOES NOT ASK YOU TO SCAN THE QR CODE AGAIN with your phone NEARBY or PRESENT and therefor runs the risk that anyone AFTERWARDS then using the same PC and browser can assess your WhatsApp WITHOUT your knowledge and/or permission. It is requested that this risk be removed by WhatsApp and/or GoogleChrome themselves ASAP pleassssse. A temporary fix though is to DELETE the WhatsApp 'reference' item in the HISTORY of the browser, and it IS possible. Thanks.