Table 3. Identified OTUs for keyboard data.

ID	OTU Name
1	Bacteria;Firmicutes;Bacilli;Lactobacillales;Carnobacteriaceae (100)
2	Bacteria;Proteobacteria;Betaproteobacteria;Neisseriales;Neisseriaceae (88)
3	Bacteria;Actinobacteria;Actinobacteria;Actinomycetales;Propionibacteriaceae (100)
4	Bacteria;Actinobacteria;Actinobacteria;Actinomycetales;Corynebacteriaceae (100)
5	Bacteria;Actinobacteria;Actinobacteria;Actinomycetales;Micrococcaceae (100)
6	Bacteria;Firmicutes;Bacilli;Bacillales;Staphylococcaceae (100)
7	Bacteria;Firmicutes;Bacilli;Lactobacillales;Streptococcaceae (100)
8	Bacteria;Cyanobacteria;Chloroplast;Streptophyta (100)