I live in a part of Los Angeles where I feel safer bringing pepper spray on walks. The problem is, I don’t always remember to bring it with me, and it’s not legal to carry it everywhere I go. Pebblebee’s $59.99 Halo Bluetooth tracker surprised me by being a suitable replacement because it doubles as a siren-equipped personal safety device, and I can bring it anywhere. A quick pull of its cap triggers a bunch of safety features: Its 130dB siren will sound, its LEDs will strobe, and it will automatically alert up to five trusted contacts with text messages (Pebblebee’s Alert Live service shares your location for 24 hours, or as a one-time location snapshot). Alert Live comes free for the first year, after which it costs $24.99 annually. If you choose not to renew, the only features you’ll lose are real-time location sharing and the ability to alert more than one emergency contact at a time.…