On 30 June 2015 WordPress.com introduced a new EU Cookies Directive widget you can activate on your WordPress.com website/blog, though I’ve not seen an announcement about it. You’ll find it under Appearance/Widgets.
The rules are set out on the Information Commissioner’s website: Cookies and similar technologies.
Even if your site works without cookies, arguably you should have a policy to explain this, otherwise how will people know? But I’m not a lawyer and I will leave you to check that one with the Information Commissioner or your favourite legal eagle.
The Information Commissioner was happy with implicit consent for most circumstances. Again this is explained on the Information Commissioner’s website: Cookies and similar technologies.
The new WordPress.com EU Cookies Law widget now also allows you to go one step further and gain explicit consent.
WordPress has more on these issues in their support forum page: EU Cookie Law Widget where they also explain the optional settings for the widget.
I will reiterate what WordPress says on that page:
“… it is your responsibility to ensure that you comply with the relevant applicable laws in your jurisdiction. This widget is designed to help you take steps towards this, but is not offered as a guaranteed or complete solution for compliance with the ePrivacy Directive“
For many people though, this new widget will be a useful step forward.
For others, of course, who are more relaxed about cookies, this kind of pop-up banner can be an annoyance and I would be interested to hear your feedback.