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1.identify potential suspects whose DNA may match evidence left at crime scenes

2.exonerate persons wrongly accused of crimes

3.identify crime and catastrophe victims

4.establish paternity and other family relationships

5.identify endangered and protected species as an aid to wildlife
officials (could be used for prosecuting poachers)

6.detect bacteria and other organisms that may pollute air, water,
soil, and food

7.match organ donors with recipients in transplant programs

8. determine pedigree for seed or livestock breeds

9.authenticate consumables such as caviar and wine
Any type of organism can be identified by examination of DNA sequences
unique to that species. Identifying individuals is less precise at
this time, although when DNA sequencing technologies progress further,
direct characterization of very large DNA segments, and possibly even
whole genomes, will become feasible and practical and will allow
precise individual identification.
To identify individuals, forensic scientists scan about 10 DNA regions
that vary from person to person and use the data to create a DNA
profile of that individual (sometimes called a DNA fingerprint). There
is an extremely small chance that another person has the same DNA
profile for a particular set of regions.