I'd pick something non-slippery cause you never know who'll slip, sorry it is a reality check as you're trying to do!! Hope it goes well...in case you might change direction, I have these which are through-body tiles with 5 'hardness' rating/ durable and there are more:
http://www.lowes.com/pd_88541-34692-G3TG20_0__?productId=1103329&Ntt=all+through+white+floor+tile&pl=1&currentURL=%3FNtt%3Dall%2Bthrough%2Bwhite%2Bfloor%2Btile&facetInfo=

Polished porcelain is "very slippery when wet" and to my knowledge there is nothing that can be applied to it to resolve this. If they have a non polished version of this tile that would be your best option - especially if you have children. Otherwise, I would purchase a good sized bathroom rug (with rubber or silicone grips) to avoid accidents. Unfortunately, the rug will cover the beautiful tile, but better safe than in a cast.
Go with the non polished version if possible.
I have the exact same tile in my bathroom but it's 12"x 24" non polished. It's a bit more work to clean, but I feel a lot safer. Hope this helps.

I agree with the above comments. I would think twice about using something like that in the bathroom. Good luck with your rooms! :)

Thank you all for your thoughts and advice! We chose to return the polished tile.. We do have kids and it is not worth a trip to the ER!
Back to square one...

There are non slip applications that can treat a floor. I know a professional who does this and told me it invisible and would only reduce the shine of polished porcelain slightly. However generally professionals are not interested in a small residential setting rather a large public area so it may cost you more than you would like to have this done.

I have seen several products to coat glossy floors claiming it is non slip and invisible. Cannot find anyone to confirm though.

what was the name of the polished tile in this pic ?

We have polished and it's not slipper at all.

Can you tell me who manufacturer is and color?

With all the hard surfaces and sharp edges in a bathroom, slippery tile is the last thing you want. I used 12" porcelain tiles for my bathroom floor, but it has a non-shiny, slightly textured stone-like finish. I used matching 1"X1" sheet tiles for the shower floor: the more grout you have, the less slippery the floor. My bathroom is beautiful.
The current trend toward polished slab marble or slab granite for bathroom floor and shower floor surfaces is ignoring the safety issue.
Slip-and-fall accidents can cause severe injury or even death.
Safety should be your first consideration.

We had polished porcelain floors in our kitchen area in our last home. I was reluctant to put them in, but the beauty of the tile won me over. We walked through that area after being in the pool with wet bare feet, the flooring never seemed slippery.

Here are 2 of the baths that I put a polished porcelain tiles. Both are the "marble" looking tiles. I do have bath mats near the shower. Other than that, never had any issues with it being slippery. My epoxy garage floors however, very slippery!

Hi James, can you please share the name and brand of the polished "marble looking" tile you picked ?

The white one was purchased at home depot.

https://www.homedepot.com/p/Home-Decorators-Collection-Carrara-12-in-x-24-in-Polished-Porcelain-Floor-and-Wall-Tile-2-sq-ft-NHDCARR1224P/205137308

The gray one I forgot the name. But floor and decor sells a very similar version in matte.

https://www.flooranddecor.com/porcelain-tile/exeter-stone-porcelain-tile-100486414.html

Polished porcelain tiles certainly can be slippery, especially in a room where water and bare feet coexist. The tile is possibly less slippery than a slick porcelain tub. You can add a non-slip mat in a tub, but the easiest way to make the floor safer is to use washable latex-backed bathroom rugs. I would use rugs in a color very similar to the flooring.

No difference between polished and Matt surface. If there was, why do all the high end hotels use polished porcelain on their floors. Lol.

That is beautiful

https://www.flooranddecor.com/porcelain-tile/vita-bella-polished-porcelain-tile-100903715.html I like this. I am afraid of its slipperiness, even though floor and decor says