In this day and age, having a robust LinkedIn profile is important to appeal to more employers. With this in mind, having your LinkedIn session cookie readily available is extremely essential.
Luckily, you may use the ThreeSixty Google Chrome extension to automatically retrieve your LinkedIn session cookie, copy it to your clipboard, and then make available for usage in the ThreeSixty app.

Indeed, not having to manually copy the cookie from your browser's cookie storage will save you time. Moreover, the add-on aims to provide further capabilities that will let you use it to directly access the ThreeSixty app. If you want a convenient yet effective helper, this extension would be your best bet!