Liquid contact indicator

These indicators are small adhesives that are placed on several points within electronic devices such as laptops and smartphones.

The main purpose of the liquid contact indicator is to have a lead to the cause of a defect in electronic devices.

[citation needed] In the simplest form, liquid contact indicators are good for a first lead to the cause of defects.

Therefore, manufacturers introduced LCIs that are harder to reproduce, even with small holographic details.

For instance there is an LCI in the SIM-card slot of Apple iPhones and in the dock connectors and headphone jacks of iPods made since 2006.