Question: There are those that kiss their Tzitzis during Shema at Shacharis as per Kitzur Shulchan Aruch 17:7 and the Kaf HaChaim 18 and there are those that do not. What is the source and reason for those that do not kiss their Tzitzis during Shema at Shacharis?

Answer: 
Ma'ase Rav Siman 39 says that the GR"A would not kiss his Tzitzit during Keriyat Shema. The Kovetz Mepharshim (printed on the side in the [Weinrab edition](http://www.google.com/imgres?um=1&hl=en&sa=N&biw=1280&bih=699&tbm=isch&tbnid=SGjK79JsFGdFjM%3a&imgrefurl=http://www.mysefer.com/product.asp?P_ID=4461&strPageHistory=related&docid=xc8pmsi4GkM_rM&imgurl=http://www.mysefer.com/uploads/images_products/4461.jpg&w=150&h=225&ei=tSUzT6_kFaPC0AHQwM30Bw&zoom=1&iact=hc&vpx=680&vpy=213&dur=1311&hovh=180&hovw=120&tx=82&ty=101&sig=106136706347559917116&page=1&tbnh=162&tbnw=108&start=0&ndsp=22&ved=1t:429,r:4,s:0)) supposes that he did so because he held that when saying the third paragraph of Keriyat Shema one should gaze at his tzitziyot (see biur hagra O"H on Siman 24 seif katan 8), and kissing them breaks his focus.
The Bet Yosef says (paraphrase, see comments) 'some say it is pride to kiss the Tzitzis while praying Shema. And some say there is no pride because it is a very common practice. And the second one is the Minhag.' I guess some people are still Hoshesh to the Isur of Yuhura.