Hey folks, perhaps this question can be a little silly, but looking for rfid readers with enough range to my project i got this one: aliexpress.com/item/4000051268255.html
However i do not know if any type is useful to Arduino projects, can someone answer me? Also if anybody has tips to increase the range of a reader, send me, it'll be great.
Yes, 125kHz RFID readers are quite common. Here is an example: Grove - 125KHz RFID Reader | Seeed Studio Wiki
Search for "Arduino 125KHz RFID example" for others.
Doubt you'll be able to increase read range. Partially linked to antenna design of reader and the tag.
13.56MHz may be better on read range when using ISO15693 standard.