Qalin-jabinta laysarka, waxaa loo isticmaalaa in si xushmad leh loogu dhalaaliyo oo looga saaro rinjiga meelaha gaarka ah ee lakabka sare. Marka rinjiga laga saaro, iftiinka dambe wuxuu iftiimin doonaa furaha badhanka ee aaggaas.

Waa muhiim in la ogaado in keypad-yada caagga ah ee silikoonku badanaa lagu dhejiyo laysarka si kor loogu qaado saameynta nalalka gadaal. Si kastaba ha ahaatee, etching-ka laysarka wuxuu shaqeeyaa oo keliya haddii keypad-yada caagga ah ee silikoonku leeyahay nal gadaal. Haddii aan la helin nal gadaal ah, aagga ama meelaha lagu dhejiyo laysarka lama iftiimin doono. Dhammaan keypad-yada caagga ah ee silikoonku leeyahay ee leh nal gadaal ah laguma dhejiyo laysarka, laakiin dhammaan ama inta badan keypad-yada caagga ah ee silikoonku leeyahay ee laysarka leh waxay leeyihiin nal gadaal ah.