Teleporter

Topic is very Simple, cause this thing for an ordinary people on Earth doesnt exist, but lets go deeper info this topic to show negative phenomen that teleportation would cause.

Above all, teleportation technique is partly forbiden, i say partialy forbiden because not autorised and not accepted teleportation technique is forbiden and treated as a weapon. Teleportation essentialy consists of dematerialization, then move the "matter" by various groups to then merge it in a special machine. This way you can say that the machine is in a specific way "kills" the existence, then its molecules merge elsewhere. 

Therefore teleportation in its essence is prohibited, what is more, a machine like this every existence can be wrong, especially by making such a specialized function which is combining very small particles into a complete whole. In such event, we risk being teleport to genetic changes such as genetic incompatibility between a father and his children, and the incompatibility of mother with her offspring. In extreme cases the incompatibility of dental health with what is disclosed in the official medical records. In such cases, it is likely there was a complete replacement of genotype and that person can not be taken as original person.
Checking compliance of teeth is also standard procedure of identity verification used in the Member States of the European Union. 

What's more change, often just one or two successful teleportacjach make the fingerprint changes, making them incompatible and with the original fingerprint. Taking into account the whole, approving yourself teleportation, you partly commit suicide and ourselves genetic material is used for cloning. However, this is extreme.

I bring this up because, as some saw it, the Stargate program is not only a TV show, but also a reality, and there use teleportation is on the agenda.