Galaxy S5 Screen issue

[AC Question]

Hi all, my Galaxy S5 has just this past week started having a weird issue with the touchscreen. The slightest touch will act like I've tapped that spot repeatedly several times. For example, hitting "a" on the keyboard will just randomly type "a" into whatever app I'm using at the time. Using swipe for texting is impossible. Browsing something like the any mobile app opens up comments or randomly up/down votes stuff as I scroll. Very strange. Anyone else experience this? I am on a month trip to Hawaii and people here suggested me that places like TCAWireless could solve this issue. I just want to know that is this any hardware issue? What you people think? Is there any other option available?