Can I use Infini to address the atrophic scars (box-type, i think) in my temple? (Photos)

Infini is a great treatment for acne scarring like yours. I would highly recommend it. The machine in the picture is not familiar to me. I had to send it around, and I was told it is an old model with the old logo. I have no idea whether it is substantially different from the current model or whether the settings would be any different. 

Short answer is that I have seen INFINI work -not a primary method, but the needles essentially break down the scar tissue vertically and by secondary intent your scars are freed up. In your case I would probably perform subcision with a spacer filler as you have not only atrophic scars but tethered scarring as well. Leave it up to your specialist for the settings as he or she will know best. Infini is not the best treatment, it is only one of many treatments that we can employ to treat your acne scars. Too many patients rely on the device as THE treatment, it is not- its only a tool that the Specialist uses to sort out a problem. 
Acne scar revision is a sub-specialised field. For the best results, one should target the acne scar type with ideal treatments and not just one device. The web reference below will take you to a resource to help you understand acne scar revision at a specialist level. I embedded all the videos in one page to help.

For example deep ice pick scars, and narrow box car scars can be treated with TCA CROSS peels, mixed scars, rolling, and atrophic scars treated with fractional devices such as Fraxel, fractional lasers, PRP and INFINI radiofrequency. Atrophic scars (depressions) can be treated with either fat grafts, or with HA dermal fillers. Tethered and anchored scars are best treated with surgical techniques such as subcision. Other surgical techniques that we use include punch elevation, surgical elevation, punch excision and traditional excision of focal scars.

The majority of patients will have a collection of different scar types, and hence a tailored treatment METHOD will be best. Careful examination, especially under angled lighting with scar mapping will give you an understanding of what are the best options for your scars. In the majority of patients its finding the correct combination that give you best results, and everyone is unique! All the best,

Dr Davin Lim. Acne scar dermatologist specialist. Brisbane, Australia.