What tag is this?

[Jasebta]

Ordered some new shoes earlier in the week and they just arrived, question is what is this tag on the shoes?
They were bought from Size? so could have been taken from in store therefore electrical security tag? Or is it something else? Safe to try and cut to remove?

Can just make out the invoice in the background so you guys don't jump to conclusions

 

[Jasebta]

Don't have a landline and not really wanting extortionate charges so will fire off an email to their customer services and await reply unless anyone can confirm earlier if it's safe to just cut it off!

 

[Jasebta]

Dared it and cut away. Looks like it was just an electronic tag so ordeal over!
They're white leather skytops ordered from size.co.uk, 4th pair of Supras so far and I have more on the way!