diff --git a/power-libperfmgr/Power.cpp b/power-libperfmgr/Power.cpp
index 300c557..51037ba 100644
--- a/power-libperfmgr/Power.cpp
+++ b/power-libperfmgr/Power.cpp
@@ -30,7 +30,6 @@
 #include "Power.h"
 #include <linux/input.h>
 
-constexpr char kWakeupEventNode[] = "/dev/input/event2";
 constexpr int kWakeupModeOff = 4;
 constexpr int kWakeupModeOn = 5;
 
@@ -141,10 +140,47 @@ Return<void> Power::powerHint(PowerHint_1_0 hint, int32_t data) {
     return Void();
 }
 
+int open_ts_input() {
+    int fd = -1;
+    DIR *dir = opendir("/dev/input");
+
+    if (dir != NULL) {
+        struct dirent *ent;
+
+        while ((ent = readdir(dir)) != NULL) {
+            if (ent->d_type == DT_CHR) {
+                char absolute_path[PATH_MAX] = {0};
+                char name[80] = {0};
+
+                strcpy(absolute_path, "/dev/input/");
+                strcat(absolute_path, ent->d_name);
+
+                fd = open(absolute_path, O_RDWR);
+                if (ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) > 0) {
+                    if (strcmp(name, "fts_ts") == 0 ||
+                            strcmp(name, "NVTCapacitiveTouchScreen") == 0)
+                        break;
+                }
+
+                close(fd);
+                fd = -1;
+            }
+        }
+
+        closedir(dir);
+    }
+
+    return fd;
+}
+
 Return<void> Power::setFeature(Feature feature, bool activate) {
     switch (feature) {
         case Feature::POWER_FEATURE_DOUBLE_TAP_TO_WAKE: {
-            int fd = open(kWakeupEventNode, O_RDWR);
+            int fd = open_ts_input();
+            if (fd == -1) {
+                ALOGW("DT2W won't work because no supported touchscreen input devices were found");
+                return Void();
+            }
             struct input_event ev;
             ev.type = EV_SYN;
             ev.code = SYN_CONFIG;
diff --git a/sepolicy/vendor/hal_power_default.te b/sepolicy/vendor/hal_power_default.te
index da39c42..c2eac2f 100644
--- a/sepolicy/vendor/hal_power_default.te
+++ b/sepolicy/vendor/hal_power_default.te
@@ -1,3 +1,3 @@
 # Allow hal_power_default to write to dt2w nodes
-allow hal_power_default input_device:dir search;
+allow hal_power_default input_device:dir r_dir_perms;
 allow hal_power_default input_device:chr_file rw_file_perms;