I understanding that the following sentence is reasonably good for expressing the given idea.
**** (1.) This method is likely to be biased since this requires participants to bring their own laptops.**
(1) This method is likely to be biased since this requires participants to bring their own laptops.
However, I was curious to know if the following is correct (given that it sounds better at least to me).
(2.) This method is likely to be biased since this requires participants' bringing their own laptops.
Thank you for your help.
(2) This method is likely to be biased since this requires participants' bringing their own laptops.